The patch for Arig to replace its glass with K2's glass misses three of the technology unlocks.

data.raw["technology"]["planetaris-compression"].research_trigger = {
    type = "craft-item",
    item = "glass",
    count = 50
}

data.raw.technology["condensing-agricultural-tower"].research_trigger = {
    type = "craft-item",
    item = "glass",
    count = 25
}
data.raw.technology["planetaris-raw-diamond-production"].research_trigger = {
    type = "craft-item",
    item = "kr-quartz",
    count = 50
}

I am sure you would probably want to just update data.item.replace_all to handle it.

Can confirm this bug as the research still points to the old entities. Crafting the intended recipe (the original Arig one) doesn't make progression as it crafts a different item, thus I get locked.

Fixed in 1.21.