select-all while read-only textarea is focused selects entire page Firefox correctly only selects the text in the text area.
Created attachment 20589 [details] test case This is probably a regression from Safari 2 (native form controls). But I don't have a copy on hand to test with.
Regression in Safari 3. I tried fixing this once with http://trac.webkit.org/projects/webkit/changeset/23881 But it broke layout tests and I remember discussing with some other people that the fix may have been too specific. If you do select-all in a shadow tree, it shouldn't extend outside of the shadow tree.
A similar bug was opened against Chromium, see http://code.google.com/p/chromium/issues/detail?id=2642 and it does not repro with Chromium 0.3.155.0 but Safari 525 which suggests that is had been fixed in a recent change to WebKit.
Fixed in http://trac.webkit.org/changeset/34900