MIDI Footswitch with BIAS FX 2 in Ableton

[gleb]

Hi all,
Has anyone been able to use a MIDI Footswitch with the BIAS FX 2 plugin in Ableton?
It works fine with the standalone version, both CC (for effects, looper, etc) and PC commands (for preset switching) work.

However, the VST version seems to ignore PC messages, and only the CCs work. Which means I can't jump to presets.
My setup:
MIDI Commander Footswitch
Ableton 11 Suite, latest
Windows x64

I created an empty MIDI track that routes to the BIAS FX in an audio track. This gets the CCs to come through.
On the MIDI track, I can see with a MIDI Monitor the PC commands coming in. But BIAS FX is not responding to them.

Is this Ableton not passing them through or BIAS FX ignoring them in VST mode?
Any tips on how to debug the issue?