I think it should be a bug? for example,I add s@usdvisibility attribute inside instancer LOP,to add visibility animation ,it works.But if I write it to usd file,and read it back, it is invisible in all frame range. the file only writes "invisible",no "inherit".
some code:
token visibility.timeSamples = {
1013: "invisible",
1014: "invisible",
1015: "invisible",
1016: "invisible",
1017: "invisible",
1018: "invisible",
1019: "invisible",
1020: "invisible",
}

Please send us a hip file (either here or, better, via support) and we can take a look.

robp_sidefx
Please send us a hip file (either here or, better, via support) and we can take a look.

Thanks!

Thank you for this. Our instancer LOP indeed only explicitly authors invisibility, which is ultimately the issue here. This is not something we'll be able to look at further before the holidays. It would be immensely helpful if you could log this as a bug.