Experiencing same issue as post and many of replies here. Updated my iPhone 11 Pro to iOS 14.0.1 a few days ago and no longer works with my Belkin BoostUp 10W wireless charging pad.
Have tried: removing case
closing all apps before placing it on
powering phone off
hard reset (volume up, volume down, hold power button until Apple logo)
None have worked. Going to contact Apple Support and will update.
At the very least, I’m hoping it’s fixed in next iOS patch.