[FIXIES 13031] Fixing bug related with the thumbnail's update on a map

[Gpetrak]

This PR was created according to this issue: #13031

Checklist

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[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 67.98%. Comparing base (050aa97) to head (fbc438c).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #13033   +/-   ##
=======================================
  Coverage   67.98%   67.98%           
=======================================
  Files         980      980           
  Lines       59299    59302    +3     
  Branches     6931     6932    +1     
=======================================
+ Hits        40312    40315    +3     
+ Misses      17339    17337    -2     
- Partials     1648     1650    +2     

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