Unfortunatey this is not a new issue at all... hydraulic clutch setups seemed to have these issues from time to time. The first time it happened it appears that you were being a bit agressive with the clutch?
A few things cause it but ultimately if you are unable to resolve the issue it could be something as basic as a faulty slave cylinder. Only time will tell on that one.
This may be of some use to you...
http://www.rangeracceleration.com/Clutch_Care.html
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2001 Camaro Z28 M6 (MTI Lid/FRA, LS6 Cam, BBK LTs, 3.90s)
2021 Durango Hellcat