Fix: Various memory leaks

[timotheeguerin]

fix #1369

[codecov]

Codecov Report

Merging #1372 into master will decrease coverage by 0.02%.
The diff coverage is 37.5%.

@@            Coverage Diff             @@
##           master    #1372      +/-   ##
==========================================
- Coverage    53.7%   53.67%   -0.03%     
==========================================
  Files        1021     1021              
  Lines       24257    24269      +12     
  Branches     2793     2796       +3     
==========================================
  Hits        13027    13027              
- Misses      11230    11242      +12

Impacted Files	Coverage Δ
src/@batch-flask/ui/editor/editor.component.ts	20.73% <0%> (-1.64%)	⬇️
src/@batch-flask/ui/loading/loading.component.ts	32.43% <50%> (-3.94%)	⬇️
...batch-flask/ui/loading/simple-loading.component.ts	33.33% <57.14%> (-6.67%)	⬇️

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