The experienced behavior is most probably due to the time needed by the Splitter to recalculate its size. You can try setting the control's VisibleDuringInit
property to false and see whether this will fix the issue on your side:
If this does not help in solving the case, though, could you please prepare and send a sample fully runnable project so we could reproduce and examine the problematic behavior on our side?
Looking forward to hearing from you,
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