I am looking at this a bit more and it does seem that a half speed track needs more than 2x/double the master length to work
however, when I go to 4x length, whilst the 2:2 TRCs on the half speed track now play, they do so in an unexpected way imho
On a 16 length pattern with both a 2x and a 1/2speed and also a base 1x track the TRCs all work as expected except for later into 1/2 speed playback, each track only has 2 trigs, one is a 1:2 and the next is a 2:2
So each track is doing A / B / A / B and so on alternating between the two TRC types
However, the pattern for the 1/2 speed track is A / B / B / A or 1:2 2:2 2:2 1:2
The best reference point may well be an established bit of gear, if it differs from that then it could be a bug - this doesn’t look quite right to me, so it would be good if someone else had a look at this and offered an opinion / confirmation on this test
In your case try 256 Master and see if the ordering of 2:2 is as expected - or just try a structured test for a longer 64step pattern