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multi line text box shrinks until all lines overlap

Posted

On some sites (not all) multi line text boxes seem normal at first, but when I click into them to edit the content, they start to shrink vertically and the line spacing is reduced pixel by pixel until all lines overlap in a single line after a second or two.

I guess it's some scripting or css feature these sites use. It only happens on the linux version, works fine with Firefox on Windows. I don't exactly know when this started but it must have been a very recent change.

On some sites (not all) multi line text boxes seem normal at first, but when I click into them to edit the content, they start to shrink vertically and the line spacing is reduced pixel by pixel until all lines overlap in a single line after a second or two. I guess it's some scripting or css feature these sites use. It only happens on the linux version, works fine with Firefox on Windows. I don't exactly know when this started but it must have been a very recent change.

Chosen solution

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.

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Additional System Details

Application

  • Firefox 66.0.5
  • User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0
  • Support URL: https://support.mozilla.org/1/firefox/66.0.5/Linux/en-US/

Extensions

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Javascript

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Graphics

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  • webgl2Extensions: EXT_color_buffer_float EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
  • webgl2Renderer: NVIDIA Corporation -- GeForce GT 710/PCIe/SSE2
  • webgl2Version: 3.2.0 NVIDIA 390.116
  • webgl2WSIInfo: GLX 1.4 GLX_VENDOR(client): NVIDIA Corporation GLX_VENDOR(server): NVIDIA Corporation Extensions: GLX_EXT_visual_info GLX_EXT_visual_rating GLX_EXT_import_context GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGI_video_sync GLX_SGI_swap_control GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_buffer_age GLX_ARB_create_context GLX_ARB_create_context_profile GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_ARB_create_context_no_error GLX_ARB_create_context_robustness GLX_NV_delay_before_swap GLX_EXT_stereo_tree GLX_ARB_context_flush_control GLX_NV_robustness_video_memory_purge GLX_ARB_multisample GLX_NV_float_buffer GLX_ARB_fbconfig_float GLX_EXT_framebuffer_sRGB GLX_NV_multisample_coverage GLX_NV_copy_image GLX_ARB_get_proc_address
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Basic
  • windowUsingAdvancedLayers: False

Modified Preferences

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  • User JS: No
  • Accessibility: No

Question owner

Added screen shot. (Wordpress.com admin editing image caption.) Same thing happens with two different forums based on myBB.de

Added screen shot. (Wordpress.com admin editing image caption.) Same thing happens with two different forums based on myBB.de

Modified by Zillatron

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cor-el
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17217 solutions 155544 answers

With such text areas there is usually some JavaScript active that tries to keep the size of this field as such that all the content fits (i.e. it auto-resizes). In your case it sounds that this isn't working properly. This could be a font issue where a larger font is used then expected or you are blocking JavaScript that is responsible.

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

Firefox shows the shield icon at the left end of the location/address bar in case Content Blocking is blocking content.

  • click the shield icon for more details and possibly disable the protection

You can check the Web Console about what content is blocked

You can also check the Web Console for related messages.

  • "3-bar" menu button or Tools -> Web Developer
With such text areas there is usually some JavaScript active that tries to keep the size of this field as such that all the content fits (i.e. it auto-resizes). In your case it sounds that this isn't working properly. This could be a font issue where a larger font is used then expected or you are blocking JavaScript that is responsible. If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content. *make sure your extensions and filters are updated to the latest version *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Firefox shows the shield icon at the left end of the location/address bar in case Content Blocking is blocking content. *click the shield icon for more details and possibly disable the protection You can check the Web Console about what content is blocked *"3-bar" menu button or Tools -> Web Developer *https://support.mozilla.org/en-US/kb/tracking-protection *https://support.mozilla.org/en-US/kb/content-blocking You can also check the Web Console for related messages. *"3-bar" menu button or Tools -> Web Developer
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Question owner

Nope. None of the above. There was no shield icon. I have Adblock plus and turned off blocking for the site. No change after reload. All (few) extensions are up to date. ABP is the only one supposed to do manipulation of pages. No output in the web console.

Nope. None of the above. There was no shield icon. I have Adblock plus and turned off blocking for the site. No change after reload. All (few) extensions are up to date. ABP is the only one supposed to do manipulation of pages. No output in the web console.
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cor-el
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17217 solutions 155544 answers

Chosen Solution

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.

Start Firefox in <u>Safe Mode</u> to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if <u>hardware acceleration</u> is is causing the problem. *switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes *do NOT click the "Refresh Firefox" button on the Safe Mode start window *https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems ---- You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History"). Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note. You can't recover from this 'forget' unless you have a backup of involved files. If you revisit a 'forgotten' website then data from that website will be saved once again. *https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox
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cor-el
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Helpful Reply

You are currently using Firefox from the Ubuntu repositories. You can test if this also happens with the official release or try a new profile.

You are currently using Firefox from the Ubuntu repositories. You can test if this also happens with the official release or try a new profile. *https://www.mozilla.org/en-US/firefox/all/ *https://support.mozilla.org/en-US/kb/Profiles
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Question owner

Thanks! Works in Safe Mode.

Found the culprit: "Grammar and Spell Checker - LanguageTool"

Nice tool, but I can do without. Disabling it on the affected sites is enough.

Thanks! Works in Safe Mode. Found the culprit: "Grammar and Spell Checker - LanguageTool" Nice tool, but I can do without. Disabling it on the affected sites is enough.

Modified by Zillatron

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cor-el
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You're welcome and thanks for reporting what extension caused it.

You're welcome and thanks for reporting what extension caused it.

Modified by cor-el

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