Blank Glyphs docker

On one PC (CorelDRAW2020 and 2017)  both have a totally empty Glyphs docker.   No options, settings, etc. (no Recent Glyphs at top).  

ANother PC the Glyphs docker works as expected.   F8 reset makes no changes that helps this.

All other dockers work; all other font functionality seems normal.

Makes me think something  in the Registry(?).

Anyone have a fix for this?