fix: makes the preset dialog show up properly in Linux and adjusts th…

[firefly2442]

…e dropdown so it's not cutoff, addresses issue: #3701

This fixes two items:

• First is issue New campaig hangs #3701. This also keeps the main menu visible until you make some selections for the preset. I tried multiple other avenues, this was the only way I was able to get it to show up properly. I only tested with Linux (PopOS). Someone may want to check this on Windows.
• The dropdown for the presets was getting cutoff. See screenshot:

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 10.32%. Comparing base (bd33354) to head (11584dd).
Report is 42 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5834      +/-   ##
============================================
- Coverage     10.32%   10.32%   -0.01%     
- Complexity     6127     6132       +5     
============================================
  Files          1037     1038       +1     
  Lines        138670   138780     +110     
  Branches      20521    20538      +17     
============================================
+ Hits          14321    14328       +7     
- Misses       122958   123066     +108     
+ Partials       1391     1386       -5     

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