Experiencing the exact same thing. Since I use the public version of iOS14 on my iPhone XR, the phone won‘t charge anymore on my IKEA wireless chargers. It starts charging and looses the connection after about 5 secs. After another 3 secs the phone starts to charge again. This goes on and on. In my opinion, this is pure poison for the battery. Quick fix is absolutely necessary. Now, in order to charge my phone, I have to turn it off several times until it continuously charges. This is very annoying and not acceptable in a public version (not beta) in 2020. Btw if the dev team is looking for software developers, I would be always available.