User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1b) Gecko/20020823 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1b) Gecko/20020823 Beyond a certain number, typed spaces at the end of a line don't get shown (regarding to the cursor position), although they seem to be there. Reproducible: Always Steps to Reproduce: 1. Press CTRL+M to open a new message. 2. In the mail body, enter a few words. 3. Hold down Space for a few seconds. 4. Enter another word. Actual Results: (3.) When holding down Space, only a certain number of spaces is shown. After that, the cursor goes back to just behind the last word. (4.) The word is suddenly wrapped to the next line. Expected Results: (3.) Every typed space is shown. (6.) The word should only get wrapped to the next line if it is visible that there is not enough room on the current line.

Which word is wrapped? The word from step 4? If so, that's not a bug. The only bug I see here is the caret bouncing back in step 3. Dos that still happen?

Yes, the bouncing back still happens (current linux trunk build).

*** Bug 181753 has been marked as a duplicate of this bug. ***

Kin, who should own this? The caret issue is the bug. See also dup Bug 181753. I'm thinking this is perhaps a layout or selection issue?

This is a layout issue. *** This bug has been marked as a duplicate of 104674 ***

verified.