Adding a second mask introduces transparency

When two or more masks are used at the same time, they start acting like crop filters and everything outside of the masks is hidden.

  • What is your operating system?

Windows 10

  • What is your Shotcut version (see Help > About Shotcut)?

25.05.11

  • Can you repeat the problem? If so, what are the steps?

Add the filters “Mask: Simple Shape”, another “Mask: Simple Shape”, then “Mask: Apply”. Operation does not matter.

This is a duplicate report and was ahead fixed for the next version. See also its workarounds

Multiple Masks with Add operation don't work expectedly