Thought I'd start a thread for people's experiences with OnePlus 8 Pro cases and charging.
To be clear: When I refer to "warp charging", I'm referring to use of the OnePlus 8 WIRELESS Warp charger. Warp charging with a cable should be just fine no matter what case you use.
To start off:
Spigen ToughArmor: Qi charging works fine. Warp charging usually errors out. (Personal experience)
SUPCASE Unicorn Beetle Pro: The manufacturer and forum feedback indicate that QI charging works. No reports found on whether warp charging works or not. (Reading forums, not personally tested)
SUPCASE Unicorn Beetle Style: Qi charging works fine. Warp charging somewhat slowed, but still very usable. (Personal experience)
OnePlus Sandstone Case: Slowed Qi charging. Either greatly slowed Warp Charging, or errors out - difficult to say. (Reading forums, not personally tested.)
To be clear: When I refer to "warp charging", I'm referring to use of the OnePlus 8 WIRELESS Warp charger. Warp charging with a cable should be just fine no matter what case you use.

To start off:
Spigen ToughArmor: Qi charging works fine. Warp charging usually errors out. (Personal experience)
SUPCASE Unicorn Beetle Pro: The manufacturer and forum feedback indicate that QI charging works. No reports found on whether warp charging works or not. (Reading forums, not personally tested)
SUPCASE Unicorn Beetle Style: Qi charging works fine. Warp charging somewhat slowed, but still very usable. (Personal experience)
OnePlus Sandstone Case: Slowed Qi charging. Either greatly slowed Warp Charging, or errors out - difficult to say. (Reading forums, not personally tested.)