Sidebar open/close operations cause problems with the overlay addition process.

[drawasp]

When we implemented the sidebar and tested its accessibility, we noticed that the overlay did not disappear when the sidebar was closed.
This problem occurs when the Close button is pressed with the Space bar or Enter key, and additional keys are pressed repeatedly while the Sidebar is animating to close.

This is the only detailed debugging I have been able to do, but how can I control that the overlay is not added during the transition?

The image is taken from a tried and tested example implementation in the Preline component guide.
You can clearly see that the overlay is in a state of proliferation.