Base the spelling checker on the languages added to Text-Grab

[gylotip]

Describe the pain point and your solution

Pain point: When dealing with multiple languages, all of the foreign languages are underlined in red, while the original language is not underlined in red. This is because the Edit Text Window uses the desktop's current language setting, which does not allow more than one language.
Solution: Base the spelling checker on all of the added languages in Text-Grab instead of basing the spelling checker on the desktop's language.

Mode which would include change

• Edit Text Window

Describe alternatives you've tried or considered

There are no alternatives because the spelling checker cannot detect multiple languages. That is because the spelling checker uses the desktop's language, which does not support more than one language.

Screenshots or sketches

The red circle above indicates the current desktop language.

Base the spelling checker on the above image.