I have an iPhone 12 Pro - with 53 GB storage available and running LR Ver 7.2.8 & iOS 15.3.1. I have had this issue for the past few months. Every time I start to edit with the healing tool - the brush stroke freezes as a red dot on the screen and the app crashes. Can anyone assist with this? The other editing tools seem to be working without issue. I have also tried restarting my phone, and the issue is persistent.