Popups not displaying correctly

I am using RStudio. I have tried to update everything. However some popups are not displaying correctly. I have two cases. First: I try to update a package and I get a popup that looks like this:
image
I get no text, and I have to guess what button to push.
Second: I run a program that is trying to let me select a file for processing. The resulting popup is missing all of the text:

What is going on?

Try resetting RStudio's state. If that does not fix it, tell us what operating system you are using, what version of RStudio you are using, and whether the dialog popped up by Tools > Global Settings ... is readable or blank.

Thank you. That worked. The link was a useful read. I would have had to use that if my first try had not worked. ChatGPT gave three options for resetting RStudio's state. The simplest choice was to go to the Sessions menu at the top of RStudio, and then select Reset R. Whatever that did solved the problem.

Thanks for sharing that restarting the R session actually did the trick.