aglinxinyuan opened a new issue, #5120:
URL: https://github.com/apache/texera/issues/5120

   ### What happened?
   
   When **View → Regions** is toggled on, the region hulls (soft-coloured 
outlines around each region of operators during execution) appear only on the 
**mini-map** in the bottom-right corner. The **main workflow canvas** stays 
empty no matter how the checkbox is flipped.
   
   **Expected:** the toggle should drive both surfaces — hulls visible on the 
main canvas when on, hidden when off.
   
   **Root cause:** the main editor permanently carries a `hide-region` CSS 
class that forces `display: none` on every region element, while 
`toggleRegion()` only flips a `body/visibility` attribute. The mini-map has no 
such class, so the same model elements render there. Regression from #4495 — 
fixed once before in #4112.
   
   ### How to reproduce?
   
   1. Open a workflow with at least two connected operators.
   2. Run it so the backend emits region updates.
   3. Toggle **View → Regions** on.
   4. Observe: hulls show on the mini-map but never on the main canvas.
   
   ### Branch
   
   main
   
   ### Commit Hash (Optional)
   
   dd39f93e11
   
   ### What browsers are you seeing the problem on?
   
   _No response_
   
   ### Relevant log output
   
   ```shell
   ```
   


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