From Dubai Bank point of view you are Bulgarian Citizen (if even - it's not mentioned from your side) with Residence in Dubai, UAE.What is if I want to keep my personal fiscal residence in Bulgaria and have a company setup for crypto/FX/Futures trading with second residence in Dubai (spending only a few weeks/months there but >183 days in Bulgaria). Bulgarian tax authorities would not care about CIT of the Dubai business, only about dividends paid out to myself (and that would be taxed at only 5%). But would Dubai banks accept opening corporate bank accounts for foreigners with Dubai visa/residence but with main fiscal residence in Bulgaria?
They don't care and not responsible for anything outside the UAE.
Assuming you are not even Bulgarian Citizen - it's impossible for Dubai Banks to see any link to Bulgaria Residence.