Bluetooth Integration not discovering devices

I’m trying to connect a Thermopro 357 temperature sensor using Bluetooth using the integrated Bluetooth adapter on the rpi3.

I know it should work because Home Assistant used to discover a bunch of the same sensors my neighbors were using. There is also an official integration for the model im using. So I bought one myself. But now it won’t discover it. I can connect to it using my phone without issues. It must have been some updates that broke the Bluetooth integration…