Does macOS 10.15 Catalina no longer support aptX?
I was testing the theory today with a codec name error. 

Indeed, aptX remained 100&nbsp;%. Very similar to
Bug with the name. I hope they correct in the future. Checked in Bluetooth Explorer. Ran using the check box in the SBC codec menu and aptX to check bitrate in one case or another. 

It turned out when put in priority aptX the bitrate was exclusively 384 kb/s and it was not possible to change it by any software, which is possible only with this code. Then banned aptX and it turned out bitrate which is possible only in SBC 327 kb/s. 

Plus it was possible to change bitpool, which immediately led to the fall of bitrate and sound quality.