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Issue created by Administrator@rootContributor

Collapse animation is not smooth when toggled via a button within the "collapse" element

Created by: alexpls

Bootstrap Version: 5.0.0-alpha1 Operating system: Windows 10 Browser: Firefox 80, Chrome 84

Hello,

I've noticed a case where the close animation for collapsible elements does not display smoothly:

Repro

  1. Visit this JSBin https://jsbin.com/xihawedasa/edit?html,output
  2. Click the "Outer toggle" button to open the collapsible element
  3. Click the "Inner toggle" button to close it

Expected

  1. The animation for closing the element displays smoothly

Actual

  1. It doesn't

Notes

  • This appears to be a regression since Bootstrap 4 (discussion).

If you consider this a bug, I'm happy to investigate what its cause is and open a PR to fix it.

Thanks for your awesome work on Bootstrap 😄