fix: window open popup scrollbar bug

[SSSensational]

This change is 

[codecov]

Codecov Report

Merging #679 (ba58321) into dev (29a83cc) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              dev     #679      +/-   ##
==========================================
- Coverage   29.86%   29.86%   -0.01%     
==========================================
  Files         517      517              
  Lines       27861    27864       +3     
  Branches     1196     1196              
==========================================
  Hits         8321     8321              
- Misses      19372    19375       +3     
  Partials      168      168              

Flag	Coverage Δ
unittests	29.86% <0.00%> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
packages/popup/src/App.js	0.00% <0.00%> (ø)

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