When there are Stickers near Macbook Air, then bluetooth connection with the wireless keyboard and mouse drops for a while and then reconnects. This happens each 15 minutes.
This issue doesn’t not occurs with Macbook Pro.
Same problem with iMac. The Stickers like to crash the macos bluetooth stack and while rebooting the bluetooth mouse and keyboard are gone. You can see what happens in the Bluetooth Explorer from Xcode tools. Reproducible but no known solution.