Phrase editor bug (Redux v.1.3.2 Windows 11 in Reaper)

Phrase Selection Dropdown Closes Randomly
Click on the phrase selection dropdown menu at the upper-right corner of the phrase window, and the dropdown window will remain open until you’ve selected a phrase, or clicked out of the menu.

The window closes randomly. This actually happens for that dropdown menu in any of the tabs (Phrases, Keyzones, Waveform, Modulation and Effects). Open it, perhaps navigate to one of the submenus…at some arbitrary point it will close. No mouse or keyboard input.