In order to get my mouse cursor to a legible size, I need to enlarge the cursor size in system preferences.

But I just determined with a tech support after 1 HOUR AND 20 MINUTES. That enlarging my cursor is causing lag in InDesign.

He said (paraphrasing), "It's your fault for not upgrading to Big Sur."

I said, "Well is OSX Mojave supported in InDesign 2021??"

He said, "Yes."

I said, "I want to report this as a bug."

He said, "Go to this bug support page."

I said, "No one has ever replied to me when I go to indesign.uservoice.com."

He said, "They will reply to you."

So that's why I'm reporting this here.

You give me no good options. Either I have to resize the cursor small in order to move it around in InDesign. Or else, I can see the cursor and it moves slow.

BTW, this bug does NOT happen in Illustrator, Photoshop, (nor in my other design programs) but only in InDesign!

This is below my expectations for this software. Disappointing.

You are the Forbes biggest growing company or whatever. Put some more money into fixing bugs, and your bug extermination squad.