Outlook gives flashing pop-up when i click on Poll

Hi Support

I'm using outlook 365 desktop app on win 10 . Whenn i open a new mail and click on insert ---> Poll then i got a window opened in the right side . I typed my question and I added the options and turned on for Multiple answers . When i click on " Add to email" then a flashing popup appear and disappear directly and nothing was added to the mail body . It works fine on webmail and this issue is exist only on Outlook desktop .  Any advise please ?

I tried the below suggestions without any luck :

1- Safe mode

2- A new outlook profile

3- uncheck cached mode

4- Delete outlook cache

Best regards

Sam