User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-us) AppleWebKit/533.19.4 (KHTML, like Gecko) Version/5.0.3 Safari/533.19.4 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:18.104.22.168) Gecko/20101207 Thunderbird/3.1.7 I don't see this problem on other software, including Apple Mail. Using my trackball does not create this problem. Reproducible: Always Steps to Reproduce: 1.Open a message 2.Scroll down 3. Actual Results: Vertically smeared or broken text display. Expected Results: Scrolling with undamaged text. Machine is new (late 2010) Mac Pro with 6G RAM, system 10.6.6.
Do you have extension installed ?
I see something like this too, Mac OS X 10.5.8. Started only a couple of days ago at most (Tbird 3.1.8 beta) and only happens on text/plain mail (which is the bulk of my mail, e.g. bugzilla spam). When I use the arrow keys to scroll there are subtle artifacts, using the scroll bar makes it really smear. When I unchecked the "use fixed width font for plain text" option the problem went away. When I re-checked that option it seems to have stayed OK so far, hasn't come back.
Well, the "fix"/workaround didn't last long. A few hours later and again I'm getting smeared text as I scroll in plain text mail.
Status: UNCONFIRMED → NEW
Ever confirmed: true
This sounds really likely to be a (mozilla) platform issue, although I could believe we are doing something unique that causes layout to perceive our bounding box as a pixel or two different from what it otherwise is so that any fastpath blitting causes smearing... If you do things that should cause a repaint from first principles (presumably resizing the window or moving a splitter), I assume everything instantly goes back to crisp?
spr, dveditz, do you still see this? To quote from comment 4 ... If you do things that should cause a repaint from first principles (presumably resizing the window or moving a splitter), I assume everything instantly goes back to crisp?
Haven't seen this is years.
Status: NEW → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → WORKSFORME
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