Hey Michael,
Surprised you aren’t seeing it on chrome mobile. To reproduce it, are you triggering the mobile slideout, then either clicking the X or empty space that should close it?
I’m getting the issue on chrome and safar. See screenshots.
Chrome
Safari
You can see additional weirdness on the left side once the slideout pops back out. Theres a few pixel gap where it’s not attached.
Lmk!