User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Summary says it all. I will attach an HTML testcase that reproduces this problem. Reproducible: Always Steps to Reproduce: 1. View the HTML- testcase. 2. 3. This "feature" appeared on Mozilla 1.4. Mozilla 1.3 does not have this problem!
Confirmed, current CVS build, Linux. Set NSPR_LOG_MODULES=all:5 and got no useful output.
I see this too, it behaves much like bug 222503 (infinite loop of calls to nsBlockFrame::Reflow).
Created attachment 135288 [details] Testcase #2 Make the window width very small (so it clips the form control) and then make it wider again. Do this a couple of times and Mozilla hangs at ~100% CPU.
Looks like scrollbar attribute setting to me (in the debugger).
Urk. I'll take this.
WFM, 2004-08-07-06 trunk Linux
WFM, 2004-08-06-07 trunk Windows XP -> WORKSFORME