When manually adding a security exception in Firefox the pop-up window resizes itself to a slightly larger size if you click the "get-certificate" button. The issue is that this size becomes permanent and the window cannot be resized manually. This effect is cumulative, and even after the window is closed the next time it opens it does so at the new size.
Manually accepting security exceptions is a regular thing for me and this window has now been resized to the point that I cannot see it in its entirety. Alt-Spacebar resizing attempts to move, not resize, so it doesn't help.
I am not an administrator on this system, so I can not start Firefox with any elevated privileges
How can I either resize this window manually, or restore the window to its default size.