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In certain textboxes, cursorkey, selecting text with the mouse and delete key are not working or behaviour abnormal.

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Textboxes used to create and edit webpages in a CMS (content management system).

There are two types textboxes: simple textboxes, only text can be put in: those boxes, I have no problem. Complex text boxes: text and media, pictures, embedded video etc. can be put in: abnormal behaviour of cursor keys and mouse. Describing the abnormal behaviour:

- cursor up key: act as "cursor home" - cursor down key: jump to end of article - delete key: jumps right over characters without deleting them, but encountering a (white) space:

  spaces, tabs and linefeeds are deleted.

- selecting text with mouse: nothing happen when clicking left, sweeping over text: nothing is highlighted.

Not sure when this starts, could be several days or few weeks. (current date: February 16, 2019) Could be related with last Java update.

Other browsers: Chrome, explorer and Edge: no problem.

Pls advice!

Textboxes used to create and edit webpages in a CMS (content management system). There are two types textboxes: simple textboxes, only text can be put in: those boxes, I have no problem. Complex text boxes: text and media, pictures, embedded video etc. can be put in: abnormal behaviour of cursor keys and mouse. Describing the abnormal behaviour: - cursor up key: act as "cursor home" - cursor down key: jump to end of article - delete key: jumps right over characters without deleting them, but encountering a (white) space: spaces, tabs and linefeeds are deleted. - selecting text with mouse: nothing happen when clicking left, sweeping over text: nothing is highlighted. Not sure when this starts, could be several days or few weeks. (current date: February 16, 2019) Could be related with last Java update. Other browsers: Chrome, explorer and Edge: no problem. Pls advice!

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0

More Information

FredMcD
  • Top 10 Contributor
4254 solutions 59574 answers

Is this a website, or a program on your computer?

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}

Is this a website, or a program on your computer? Many site issues can be caused by corrupt cookies or cache. '''Warning ! ! ''' This will log you out of sites you're logged in to. You may also lose any settings for that website. * [https://support.mozilla.org/en-US/kb/delete-cookies-remove-info-websites-stored Delete cookies to remove the information websites have stored on your computer] {web link} * [https://support.mozilla.org/en-US/kb/how-clear-firefox-cache How to clear the Firefox cache] {web link} If there is still a problem, '''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''' {web link} by holding down the '''<Shift> ''(Mac=Options)''''' key, and then starting Firefox. A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Did this help? While you are in safe mode; Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches. ''[https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration How to disable Hardware Acceleration]'' {web link}

Question owner

Thank you very much FredMcD! I appreciate your time and effort...

I had done all those advices you gave, except de-selecting hardware acceleration. Anyway I did it again, clear cookies/cache. start in safe mode and disabling h/w acceleration. None of those clear the problem. Staying in safe mode the problem still exists. Two small adjustments on my early report:

- Using cursor down key, the cursor jumps to end of line (not end of article). And pressing up key: cursor jumps to beginning of the line. Still faulty behaviour. - I read in rich-text input box, in the right below corner: "powered by Tiny" So I expect the developers of this CMS system use a plug-in module from Tiny.

Answering your questions: - yes it is a webbased "content management system" to manage

 a website.

- cookies and cache cleared several times. - I have removed and reinstalled firefox completely. Did not help.

I put a screenshot of the face of the program.

Thank you very much FredMcD! I appreciate your time and effort... I had done all those advices you gave, except de-selecting hardware acceleration. Anyway I did it again, clear cookies/cache. start in safe mode and disabling h/w acceleration. None of those clear the problem. Staying in safe mode the problem still exists. Two small adjustments on my early report: - Using cursor down key, the cursor jumps to end of line (not end of article). And pressing up key: cursor jumps to beginning of the line. Still faulty behaviour. - I read in rich-text input box, in the right below corner: "powered by Tiny" So I expect the developers of this CMS system use a plug-in module from Tiny. Answering your questions: - yes it is a webbased "content management system" to manage a website. - cookies and cache cleared several times. - I have removed and reinstalled firefox completely. Did not help. I put a screenshot of the face of the program.
FredMcD
  • Top 10 Contributor
4254 solutions 59574 answers

Check with their support and ask questions. This might be a website issue.

Check with their support and ask questions. This might be a website issue.