As far I can tell the issue is caused by the fact that a ScrollView doesn't have a defined frame / dimension (cause it's scrollable as List) so when List ask to its parent (ScrollView) for frame bounding it doens't work. (I've found this thread https://developer.apple.com/forums/thread/126898 if can be helpful)
…remove FIXME comment on ExerciseView.
As far I can tell the issue is caused by the fact that a ScrollView doesn't have a defined frame / dimension (cause it's scrollable as List) so when List ask to its parent (ScrollView) for frame bounding it doens't work. (I've found this thread https://developer.apple.com/forums/thread/126898 if can be helpful)