Stairs Bug - Sims stuck in a loop

i did lol at your video tbh that would annoy me too ,after seeing this i best test my own faire too thanks for the heads up if i convert to a  festival lot

edit to add see if there is a spawner with buydebug on the lot you placed the faire or if the festival lot marker is causing a routing issue ( just a shot in the dark with the suggestions )

There are no spawners on those sets of stairs.  The only spawner I have on the lot is a pair of Wildflower Spawners for the Spring setting, but those are located by the water's edge near the May Pole included with Seasons.

The Festival Lot Marker is placed at the entrance to the lot under the balcony/bridge on the ground level.  Nothing is touching it or overlapping it on any of the settings.

it is a puzzler indeed and i hope does get resoveld for you zeek

i did place the faire in my game went to build mode to check if the grids for the ponds may have overreached and caused a dip near the stairs  but no , could it just be the stairs themselves ?  have you tried replacing that set of stairs and/or deleting one set

The stairs are the Ren. Stairs that came with the lot as part of the DLC.  The only thing I changed was the railing.

that might be the answer the railings...  replace the railings which imo that would be an odd thing to cause the glitch or at worst replacing the venue from the libiary and see if the issues persists

That's the odd thing.  I replaced all the railings with a base game option (Living Stairs Rail) in order to get rid of the preset flag banner railing that came with the DLC bundle.  (Keep in mind that I did this because I'm turning the venue into a Festival Lot.)  It is only that set of stairs that is causing the bug.  All the other sims don't bother using the second pair of stairs on the other side that lead into a tree.  They can also travel back and forth between the courtyard area and the Archery Range with no issues.  It's just that set of stairs, for some reason, if they are traveling from the bathrooms to the Archery Range.

I've tested it recently and discovered that if a Sim does get stuck in that loop, either a NPC or a Player-Controled Sim, that nobody else can use that set of stairs despite that it is also 2 squares long.

I still don't know what causes it, too.  The first time I sent my Sims to test out that specific set of stairs, they went up and down just fine. And then an NPC got stuck in the loop.  The next several times, I was in a group, and one of the Sims I had control over, who was not the active Sim, got stuck in that loop too while trying to talk to another Sim (according to their action queue).