This seems like some new problem with VE. Tested in Firefox 86 (current).
**Steps**:
# Polish Wikipedia, any article.
# Type "{{" (template).
# "Snookerzysta infobox".
# Fill first field/parameter.
# Add and ignore warnings.
# View changes (don't save please ;-))
**Result**
Only a filed parameter is present in code. Both required parameter and suggested ones are removed by VE (not by user).
Note that same thing happens on enwiki. Was just easier for me to find a good example on plwiki. On enwiki you can test e.g. with a "Infobox station" template and fill just an "address" field (you will notice that "name" is not present in code).
**Expected**
All parameters that are not removed in VE must be present in code. This includes both required and suggested parameters.
Required parameters must remain un-removable in VE (as they are now).