Minor issue, but should be fixed by version #1 imo:

 

My Properties pane is on the extreme right in IQ:
when I close e.g. the Doc pane, and the PP is adjacent, the PP takes up all the space formerly used by the Doc pane and I end up with a huge wide PP that I have to manually resize.

 

I think it would be best to have a fixed-width PP -- one that IQ does not mess with -- on the odd occasion that it is too wide, we can manually resize, or pin it.