So this is gonna sound really dumb and doesn't make any sense to me but I'm not able to test this for a few day myself, but I think I noticed the same going into the default msfs2024 KBOS on the ILS 4R. I was not getting the ILS (it was automatically set correctly on the NAVRAD page), but it came up after I activated the "approach phase" on the perf page, probably coincidence, but I'm usually able to pick up the ILSs from around 25 dme, this time the plane picked it up at 19dme, around the same time I activated approach phase. There's no reason why this should make it work and I'm probably very likely wrong, but if anyone can test this, try NOT activating approach phase and see if you get the ILS, and if you don't receive the ILS then activate and see if it comes up.