Invisible Party UI [continuing bug]

Sometimes one (let's call him seller) can't see that other player (buyer) accepted party. This leads to inability to complete many trades, players thwarted need to look for another, which may not be possible sometimes, in pseudo-league like Phrecia one, while also being unable to overcome this experience - most playerbase possibly dont even know exactly what's going on. Sellers may interrupt their doings in order to fulfill trade and find out them being blocked by other guy or he just never come there or answer any message.

Bug consequences can (or cannot) be "fixed" by players itself. For example:
1) If trader sends invitation to their hideout which buyer accepts.
2) Buyer manually portal to trader by using option via right-clicking traders nick, expanding corresponding menu.

Still, in my experience, buyers barely use any of this or other options. It is also possible to disconnect from game trying to re-inv after but it is too hard in terms of social aspect. People dont even answer to my messages when i experience this bug, not a single time. I find funny that softcore players may be forced to go through such experience in order to fulfill trades, because i personally also do know people who restrain themself from diving into POE (part two tho) because there is no full-scale auction and they feel forced to contact with other players regarding to trade, which some sufficient part of PathOfExile playerbase doesnt want at all.

That being said, issue persists for years and i believe that many find it very annoying. Atleast i often find myself being blocked for no reason by frustrated players, who seem does not understand what's going on (or trying to evade "problematic" contact later). It can also be considered as intended trade cripple, according to "The Vision" thing, which has no sense, plus there is no way that this is an unknown bug - thus it is allowed to stay there untouched for leagues intentionally. But in case someone didnt notice it yet and there are free staff to fix this lasting issue - there it is.