It used to be that as soon as an image was opened this flyout menu auto-closed. Now it remains visible with the image opened. Needs a fix.
Also, may be some code in the product that is causing issues as a plugin to Ps CC 2019 host. On the same day I updated to latest version of Topaz Studio 2 (and also added a new beta release) this error message started appearing in Ps CC. I had never received that error message in over 2-3 yrs of using Ps CC. See snip below: