Avoid mutating source widget parents

[calixteman]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.96%. Comparing base (61acf93) to head (aa812b5).

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21660      +/-   ##
==========================================
- Coverage   89.98%   89.96%   -0.03%     
==========================================
  Files         263      263              
  Lines       66887    66891       +4     
==========================================
- Hits        60186    60176      -10     
- Misses       6701     6715      +14     

Flag	Coverage Δ
browsertest	66.52% <40.00%> (-0.02%)	⬇️
fonttest	9.04% <ø> (ø)
integrationtest	69.32% <40.00%> (-0.02%)	⬇️
unittest	57.58% <100.00%> (-0.01%)	⬇️
unittestcli	56.53% <100.00%> (+0.02%)	⬆️

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[timvandermeij]

Looks good; thanks!