Comment 3 for bug 1737155

Now I've been watching more carefully, this does not just apply to the file chooser window and the system monitor. It applies to many (all?) dialogue windows with a multi-column internal layout, e.g. print.

Just now, the first time I tried to re-size the print window, it resized itself glacially slowly back to its size when I opened it. But the second time, it stayed put.

From now on, I shall log the behaviour more carefully and report back here soon.