I've been an InDesign user for years and I'm having an issue with the Windows version, 11.x - Mac works fine.
After placing an image when I resize the object box the image turns gray. As soon as I let go of the box handles the thumbnail returns.
My PC is a monster: i5, 3.5GHz processor, 16Gb ram, NVIDIA GTX 750 video card, SSD 250GB.
The app works fine except for this feature.