Hi @Ali Aslani ,
Welcome to Microsoft Q&A!
Please try to change your font from Cascadia Mono to Consolas by navigating to Tools > Options > Environment > Fonts and Colors > Font (bold type indicates fixed-width fonts):
Then, check if the Persian character is displayed correctly.
Sincerely,
Anna
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.