InDesign Tools window not functioning properly

[PasteUpArtist]

Some of the icons in the Tools window are suddenly not working (Mac Version 18.2.1). Any of the tools that have a little triangle indicating further options have stopped working. I first noticed that I can not change the elipse tool to a rectangle tool, but none of the expandable icons are working. The keyboard shortcuts work, but the little triangle does not open the additional options menu.

Any clues? 

[Steve Werner]

When there are interface issues like that, it's highly likely that it can be fixed by restoring your InDesign preferences and caches. Here's how:

https://www.rockymountaintraining.com/adobe-indesign-rebuilding-preferences-cache/