I’ve used Shotcut plenty of times and have never had this issue with exporting. When I click the main export button, I then click YouTube as the preset, and then the second Export button to actually export it never shows up. I’m assuming it’s a possible bug from the new update?
It shows up for me in version 21.12.24:

Maybe something on the screen is hiding it from you? Can you share a screenshot of Shotcut to show the problem?
alright, the screen was hiding it. I’m just an idiot
