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Can't highlight text in edit window PCDMIS 2023.1

Just upgraded from 2018 R2 to 2023 R1. I can't seem to highlight text in the edit window. When I need to edit a program and delete an item, I cannot highlight it by holding down the left mouse button and dragging. Can't do it by holding down the shift button or by pressing the tab key. The cursor moves but text is not highlighted. In truth, it does "highlight" the text. It just happens to be the same color as the background. The text I "highlight" can be deleted. If I am editing some parameter in a feature and press the tab key to edit that parameter it's "highlighted" and I can change the parameter. It's real frustrating cuz I have to pay VERY close attention to what I'm "highlighting" or I'll wind up deleting more and what I want to delete. Is this a bug in 2023 R1 or did I miss some setting somewhere?

Not having any problem with this in 2018 R2 (which I still have installed on my PC and can run independently from 2023 R1)