Yonca is currently sunk up to her armpits into the map and cannot move. So cannot place any further windchimes…
Exiting the game and restarting, the critters appeared finally and once killed the quest was completable. Seems the critters weren’t spawning or I’d become desync’d with the server and it wasn’t updating. This is a common issue in the escort quests.
Yeh the solution for me for this, was to wait a few minutes then relog. I actually relogged a few times, but the first two times she was still bugged. However afterawhile the game sort of fixed itself and respawned everything.
Until it’s fixed you need to wait a little (around the time Yonca would take to move to new location even when she looks like stuck at the old place), and keep checking the map for spawned red dots all around the place.
Combination of little waiting and killing marked enemies she eventually teleported to the final destination and the quest ended.