I've been struggling with a similar issue that makes the app crash using either Form or List. In this case I want to conditionally show the picker based on a previous option in the form. It shows the picker, but after a couple of selections in it, it crashes showing no detailed information on the error. It also in IOS15 and Xcode 13, testing directly in an iPhone 12 Pro. Didn't find a solution yet...

Just to add additional information, the server from where I'm trying to make the connection has the following versions: curl 7.85.0 (x86_64-redhat-linux-gnu) libcurl/7.85.0 OpenSSL/3.0.8

I've found the issue is still present. A workaround is to use a ZStack to overlay two charts with identical scales and axes. The first chart (background) is non-scrollable, allowing us to draw the selection RuleMark and an annotation popover. The second chart (foreground) is scrollable and enables data drawing and selection.