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I own a Samsung Galaxy Tab A8 and Samsung Galaxy A42 5G. Neither of these devices has the monospace font Courier New installed. However, when using Chrome, text boxes on websites that use Courier New are displayed in a different monospace font (which I've been unable to identify). On Firefox, they are not. This breaks the appearance of some websites which rely on text being monospaced but don't include "monospace" in their CSS font family.

Image 1: Screenshot of a website that uses Courier New, as it appears on desktop (both Firefox and Chrome). Image 2: A snippet of the CSS used in that website, showing that the font family is "courier new,courier" and does not include "monospace". Image 3: The same website using Chrome on mobile (on both the phone and the tablet). The font is distinctly not Courier New (or Courier), but is still monospaced, salvaging at least that aspect of the text. Image 4: The same website using Firefox on mobile (on both the phone and the tablet). This displays a non-monospaced font.

The obvious fix is to simply install Courier New on the phone and tablet, which I'm working on doing (update: this is much harder than it should be). However, I think Chrome displaying a different monospaced font when the requested monospaced font is unavailable is a good user experience feature, and would like to see it mirrored in Firefox.

I am using the Firefox browser on my Gs23, and it hangs all the time and needs a restart. It also has frame drops,while scrolling on websites I have checked it on other browsers and the frames are not dropped.

I'm following the instructions to set Firefox nightly as my default browser, but when I go to settings and try to switch the toggle to "set as default browser" instead of doing it, it just opens a new tab with the instruction. I got up to 4 identical tabs before I gave up. I know how to do it, it's just malfunctioning.

In a separate issue, I have had Firefox Beta for about a year on my Kindle Fire, always worked great. Since the latest update, it won't even open. The screen pops up for a second, then immediately closes. I uninstalled and reinstalled, same issue. I installed regular Firefox, no issue. Then I found nightly, installed with no issue (other than the problem listed above).

I have the latest version of Android 13 and Firefox up to date on my phone, but there's been some weird behavior when playing videos as of late. Videos refuse to properly go fullscreen now. When I tap the fullscreen button, the video moves to the center of the screen but stays in portrait orientation, which is obviously not what I want. In addition, picture-in-picture is not working at all, and the notification control panel (that lets you pause and play minimized videos from the notification) is not appearing even though notifications are not disabled for Firefox. Videos still play, but almost none of the features for them are working. What is going on? Can anyone help?

Briefly, when openning a link that should redirect to a WhatsApp chat, it says - after pressing open chat - WhatsApp not installed. Why? Note: In chrome it is working normally.

While browsing Amazon.com using the past several builds of the Nightly for Android, I get this most annoying bouncing pop-up tip that is a yellowish with black font saying to click on this heart icon to save the product. I have never seen this on any other browser for Android, and never on my Firefox on my laptop or desktop. Is there anyway to get rid of it? I cannot stand this and I have almost thrown my phone because of it many times. I have never thrown a phone before. I cannot explain why, but it pisses me off so very much!

Ok, so this question was asked 3 years ago. Is <datalist> still not working? I am only having this issue on Firefox for Android. Here is the original question I found having he same problem: https://support.mozilla.org/en-US/questions/1301131