Ubuntu
thunderbird package

  1. Bug #109943
  2. Comment #76

Comment 76 for bug 109943

Revision history for this message
In , Mkmelin+mozilla (mkmelin+mozilla) wrote :

xul:progressmeter was converted to html:progress. But looks like it's still reproducible at least on linux.
In scratchpad or console, do

document.getElementById("tabmail-container").appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "progress"));

... and check CPU usage. For me it goes to around 20% and stays there.

Can also reproduce on Firefox nightly. There in the Developer Tools | Console

document.getElementById("urlbar").appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "progress"));

The only difference is that there it jumps from listing Firefox to "GPU process" and back. It's still Firefox causing it.