REG->5.14: examples/widgets/animation/states hangs on exit

Steps to reproduce:

• Launch the example
• Change state a few times
• Close window
  Expected: Example closes
  Actual: Example hangs

Closing the example window doesn't signal the interpreter process, which keeps waiting for the signal. I'm not sure if this is related to the rc file so I tried regenerating it based on the pyside2-rcc shipped with 5.14. Now I get:

**SyntaxError: EOL while scanning string literal