save and reload, as always.
if you want to report a bug, please use the official way. you can find the appropriate link at www.airportceo.com on the right-hand side of the screen
Thank you
Had the same issue, check if every runway has all its holding points. I missed some and when I added them the problem was solved…
I had this issue as well… (on .9 i think) reloading the game solved it and never catched the bug. F10 and cleared the pathway for the flights helped some.