Expanding the file path/Settings section of the Export panel - problems

I've previously filed a bug report about PPro never remembering the width I've set for the Settings section of the Export panel; like most serious editors, I have a decent sized monitor (or three) and, almost every time I export something, I drag the divider between the Settings and the Preview to embiggen the Settings so I can see all the details.

Bug 1: This dragging/resizing process is REALLY unresponsive and laggy.

Bug 2: PPro still NEVER remembers this; each time I go from Edit to Export, the Settings panel is narrow again. Annoying.

Bug 3: Equally annoying, is the fact that PPro never uses the available width of the Settings section for the file path, as shown here:

Why does PPro not expand the filepath to that whole areas I've highlighted, rather than just showing a small snippet, with an ellipsis where the filepath has been truncated?