Logically replicated table has no visible rows

[Jeff Ross]

Hello,

We have a logically replicated table on RDS that is 39 G in size on both 
the publisher (10.21) and the subscriber (12.8).

The replication slots on the publisher are all marked as active and the 
lsns are current so no lag.

Other tables on the subscriber side are also identical in size and have 
no problem with queries against them.

We did a vacuum full on the subscriber table and the size dropped to a 
couple hundred MBs and is growing but still has no visible rows.

Now on the publisher I see a temporary replication slot so I'm guessing 
that in reality replication had not finished and that's why the 
load_events table was full sized but had no visible rows?

At this point I guess my questions are does my hunch that replication 
hadn't completely finished is the root cause of what we saw make sense?

I've always used both the lsns and the lack of temporary replication 
slots to tell when logical replication had finished--is there a more 
authoritative way to do so?

Thanks,

Jeff