dheerajturaga commented on PR #72822:
URL: https://github.com/apache/airflow/pull/72822#issuecomment-5671807032

   > > I agree, this breakage was particularly painful as it rendered the grid 
and graph view unusable. #73087 will now prevent these dags from parsing. 
Rework of existing dags though hard, seems to be the right direction.
   > 
   > #73087 will be a much worse impact on the user. The current situation is 
UI only, tasks can be scheduled and accessed via the API.
   
   The solution would be to not group those tasks in the offending pattern. In 
my use case, I had to flatten the offending groups to allow the dag render 
correctly in the UI. 
   
   While I agree that this is painful on the user side to patch existing dags, 
upcoming features such as Task Loops, Dynamic Task Groups and task group bulk 
clear status can get very very tricky. Im trying to highlight this as a 
breaking change in #73087 


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