User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3 If you have a textbox (<input type=text> or <textarea>) on a webpage where are also animated graphics (in this case GIF format), the text cursor in those textboxes doesn't blink regularly as specified in the system, but blinks like crazy, very fast, it's on almost all the time and seems to flash off in between. Additionally when you move the text cursor through the textbox, it leaves traces where the cursor is not properly 'undrawn' in the text. This looks like vertical lines between the characters. The display can be refreshed by selecting and unselecting all of the text or redrawing the textbox by scrolling the page or minimising and restoring the window. Reproducible: Always Steps to Reproduce: 1. Go to a page with animated graphics 2. Enter the textbox 3. Opt: Navigate the cursor Actual Results: Crazy cursor, leaving traces of it Expected Results: Regularly blinking cursor with no remaining fragments

Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 Yup it blinks like crazy. But I can't see the "traces of cursor". Animated GIF is a bad thing that everyone should try to avoid as it eats system resources... I think this depends on configuration of your machine is. Or something related to graphics card?

The cursor traces can be seen (on my PC at least) when you enter some text (some lines) and navigate the cursor through this text. It may need more than just two animations, I have about 10-15 little smilie animations in my case. You might use any post edit form of a bulletin board as a testcase. Link this one: http://blackboard.unclassified.de/forum.php?req=post&forum=8 There's no way around animated GIFs. Almost every web board uses them. Does Firefox already support MNGs? How can I convert them? Other browsers are incompatible, again? Cannot be due to my graphics card because other people also reported this issue to me. No special configuration. Install a blank WinXP (SP1), then Firefox 0.9.3, go to the web site and see the bug.

Added a screenshot. I could reproduce it like this: - Enter several lines of text on the page - Go somewhere in the middle - Insert a space - Backspace-remove it again - Move the cursor somewhere else -> Now you have a cursor trace where you inserted the space

This is a known Windows issue. Please find the original bug on this and mark this one duplicate.

Sorry, /I/ did not find a dupe for this. If I had, I wouldn't have posted this one. Bugzilla has the bad behaviour to either find nothing at all or hundreds of results I would need weeks to check through. I don't want to become a Mozilla specialist, I'm just annoyed with this bug... But I'd be happy if someone does something against this "known issue". :)

Duplicate of bug 215724?

*** This bug has been marked as a duplicate of 54153 ***