Answered High dynamic range (HDR) issue with item tooltip

The best workaround I've found is to turn on Large Font Mode under Gameplay. It does a lot more than the name implies, which could be good or bad depending on your screen size & resolution. It also darkens the background on tooltips/drops a bit, & increases the size of the UI in general(Inventory & character panel use the whole screen vertically). It's not too bad on a 4K screen imo as items being larger lets me appreciate finer detail in them, but I do wish tooltips were a bit smaller sometimes, just keeping the darker backgrounds.