Is there a plan to fix this issue in Studio? The pain has lasted way too long...

Indeed Jussi as Hunspell fails so many languages like yours and mine (Arabic)! I hope a solution comes fast enough to save the day for us. 

try this and let me know if it works for you!

try this solution, I think it worked well, at least until RWS finds a permanent solution for this issue.

I cannot delete the Normal.dotm, since there are many essential macros I cannot live without.

Then make a copy of it, delete it, set the spell checker up in Studio, and once done, replace the new one with the old copied Normal template. I am sure this will work inshallah. 

Then make a copy of it, delete it, set the spell checker up in Studio, and once done, replace the new one with the old copied Normal template. I am sure this will work inshallah. 

When I did this, non of my macros were lost at all, so that you can be assured.