Check out v1.2.6, I tried to prevent Mitch from crashing when you press “Cancel” on those buggy installations. Again, I can’t really test this on my device, so I’d like to hear your feedback.
Good news.
"Cancel" now works and I was also able to install the update normally through Mitch.
The installation icons still stick around after updating, but it's not really a problem since I'm able to remove them by pressing "cancel" now.
Thanks a ton for the quick and effective responses. It's a great project you got going on here, and I want you to know that I really appreciate all your hard work.