Can you please check this bug report to see if this is your issue?: https://answers.ea.com/t5/Bug-Reports/OPEN-Routing-Fails-while-trying-to-leave-enter-room-Agave-Abod...
Following are some initial things to begin troubleshooting. If these do not help, we can advance to other possibilities.
Do you have Mods or CC (or have you ever had them)? If you do please remove them in this process and try the troubleshooting as described below. (If you don't have Mods or CC, just skip the part about removing the Mods folder, but still delete the cache files mentioned and run the repair.) If you ever had Mods or CC in the past then do the steps as if you have them currently (removing the Mods folder), as there could be damage that has remained after you removed them.
If it was Mods/CC: If this fixes the issue I would recommend that you check with the Mod and CC creators to see if there are any known issues with their Mod/CC clashing with the recent update and if so do they have an updated Mod/CC that will address the changes in the game's code from the update. You can then re-add your updated Mods/CC one at a time to see if one was conflicting with the function/causing the glitch - but do not re-add the old Resource.cfg file from the old mods folder, as it’s possible for it to have become corrupted.
If you have a lot of Mods or CC you can do so by via the 50/50 method. Let me know if you need directions on this.
@Sid1701d9 Interesting. I've frequently 'switched' the door handle/direction and have never noticed any issues or that it made any difference. Either way the sim needs a clearance of one tile on each side for a single door and two on each side for a double door. Plus they need to then be able to proceed forward or to the left or right.
Saturday - last edited Saturday
@jonBGHS I just did an experiments on a residential lot. I put a Spa men's only door and a Spa women's only door on one large bathroom.
Interestingly when I divided the bathroom with a wall (with one of the doors on each new small bathroom):
And... (Ahhh... @Sid1701d9 Now I think I see what you mean. I misunderstood that you were speaking specifically about the direction of the door with a gender image on it...)
In that divided bathroom, when I turned the direction of the door so the man and woman images were inward/reversed/backwards (on the side of the door inside the bathroom)
So... I'm not sure if any of the above is the case in how your bathroom/doors are set up, but form all I can tell the men's only and women's only doors should work correctly only if you make sure that the gender-specific image is facing the outside (entrance side) of the door. Be careful to make sure that the image is not facing the inward/reversed/backwards direction (on the side of the door inside the bathroom).
Something that I do think is noteworthy and I think I would recommend a bug report for is that I did find the default placement of the opposite gender doors is doing a glitchy thing sometimes for me. If this is the case for others it may be a bug. I found that frequently if I place both doors, I will find the door for one gender places automatically correctly (with the gender image outward) while the other door will place automatically incorrectly (backward - with the gender image inward) which then would lead to the messed-up behavior I mentioned above.
A workaround for this would be to always check that your doors have placed correctly, and if they placed incorrectly (with the gender image inward) you can select the door and press the < or > buttons to reverse the direction.
I repaired my game and took out mods and the doors started working like they are supposed to. Although the doors don't have clearance of 1 tile on either side but they still worked like they were supposed to without mods. With mods any sim could walk inside. I have to 50/50 now to see which mod is causing them to do that.
Tuesday - last edited Tuesday
@jonBGHS As long as the door has the one tile (or 2 or 3, etc depending on size) in front of it on doth sides of the wall, it should work. (Unless it requires more width tiles - you can tell when placing.) Beyond that, as long as the Sim can go either right or left, or go forward, they will normally route it fine. Just play test to be sure.
Glad you got them working right!