Previously, delete/strikethrough was shown as red, replace was shown as blue, highlight as yellow, etc.

Now suddenly they are all the same red color so it becomes very hard to tell them apart.

(In the attached screenshot you can see comment, highlight, replace, and strikethrough/delete are all the same color).

This was likely a mistake/bug introduced in a recent update. It started happening in both Acrobat Pro and Reader, and makes commenting a lot more confusing.
We are currently on version 2024.003.20054 (of both Reader and Pro).

A workaround is to manually have the user change the color before adding comments, but having to teach the hundreds of people who will add comments to our PDFs how to manually change the colors themselves is not feasible. Please revert it so the different comment types have distinct colors.