7.6.1 should be released any time now, although 7.2.10 was in that state for a while and got pushed back a number of times before it finally came out.

You're welcome.  I think this is something that they'll need to work on for the first update in the 7.7 line.  I just happened to notice the behavior in my lab setup but we'll be seeing more tickets opened for this once the adoption rate of 7.7 picks...

7.7 deprecates Snort2 which is what the SRUs are for so it's likely related to that.  Snort3 uses the LSPs and those should still be working fine on 7.7.

This is a known issue and should be fixed soon.  In the meantime you can contact TAC for a temporary workaround.