Why doesn't the transition work a second time?

Question

Unity

There is a button, after it fades out (implemented through the attached script), there is a transition to the second scene, on the second scene there is another button, thanks to which you can return to the first one. And at this moment we are close to the problem, if after returning to the first scene we try to go to the second one again, then the button fades out, as it should, but there is no transition to the second scene. That is, the transition to the next scene only works the first time.

Help me please.

Answer 1

Use a debugger and find out why your logic is failing.

Answer 2

Maybe the Start event (or something else) doesn't work when the scene is switched. Need a debugger.