2.7.1 b7 fader jumping issues

On 2.7.1 b7, after recalling a MSC_Receive Disable macro, the faders on my Gio (Master) jump to replicate wherever the faders are on my Ion (backup). The macro only has “MSC_Receive Disable” in it, and Tab99 only shows the macro’s contents as having happened. I’ve got a video and some images but I can’t work out how to post while on my phone.
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