Grace Notes causing Tuplets to corrupt and display improperly

I recently came across a bug: I have a drumset piece with a lot of different tuplets, and some of them have grace notes as well. My original file that already had the grace notes in it informed me it was corrupted and displayed the measures very strangely. I reverted to a backup, and isolated the problem to these grace notes on the tuplets. For some reason, when I try to add grace notes to the tuplets and save the file, the next time I re-open the file the tuplet is no longer showing (the grace notes are there, and the main rhythm is there, but it doesn't show what number of tuplet it is) and when I try to copy and paste that selection, I get an error saying that I need to select the entire tuplet (even though I was selecting the entire measure). I'm attaching pictures of when I enter the grace notes, and then when I've saved, closed, and re-opened the file.

It's not an emergency for me since it's just a listening/learning track, but it was enough of a frustration that I figured I'd ask before other people run into the same brick wall. Running Musescore 3.0.0.4785 on a Windows 10 laptop.