cxhttt233 opened a new issue, #7868:
URL: https://github.com/apache/hop/issues/7868

   ### Apache Hop version?
   
   2.19.0-SNAPSHOT-20260804
   
   ### Java version?
   
   Java 21
   
   ### Operating system
   
   Docker
   
   ### What happened?
   
   Hi, I encountered an intermittent issue with the ContextDialog in Hop Web.
   
   On some first opens, the transform list can be scrolled normally at first, 
but stops partway through the list, usually around the Input category. 
Transforms below that point cannot be reached.
   
   Typing in the search field, or closing and reopening the dialog, may restore 
the complete list. So this seems more like a scrolling/rendering issue than 
missing transform data.
   
   I asked Codex to review the current ContextDialog implementation. One 
possible cause is that updateVerticalBar() is called before the first paint has 
calculated the actual content height. Later, onPaint() resizes the Canvas to 
the real height, but the scrollbar is not explicitly updated again.
   
   PR #531 previously updated the vertical scrollbar after resizing the Canvas, 
so the RAP ScrolledComposite may occasionally keep a stale scroll range until 
another search or reopen triggers a refresh.
   
   This is only a suspected cause and still needs confirmation.
   
   Client: Chrome on Windows.
   
   ### Issue Priority
   
   Priority: 3
   
   ### Issue Component
   
   Component: Hop Gui


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