For the last couple of days there have been no push-back carts in the sim (for me),  There are certainly many times when I find them to be unrealistic and not needed, but there are other times I can't turn out of the parking spot without them.

If I press the hotkeys for a push-back (Shift-P), the aircraft "jerks" and you can tell something is pushing.  I release the brakes and away we go.  Pressing Shift-P again stops the push.  Basically, it's working except the cart (which is now invisible) is already attached and the push begins immediately.

Am I the only one experiencing this issue?

I experienced this just today.  Have no idea what maybe causing it.

Did you install any Addon recently? some sceneries may be culprit for this strange behavior.

Hmm... I have a number of add-ons that I take in & out but none of them were scenery items in the last couple of days.  The few mods/add-ons I had in were all used successfully since the last updates - there were no issues with the push-back cart before when these were used.

I will try a few things - make minor changes and combinations and see if it reappears,

I had this too. In my case it was a faulty AirportServices/services.spb which has caused the disappearance of the ground services at every airport.

Edited April 17, 20233 yr by Nemo

I just switched aircraft from the C208B mod (Asobo_C208B_Realism_Mod_1.1.0_S_k8L) to the Turbo Bonanza.  Voila!  The cart is back.

Very strange.  I know I flew at least 4 flights after the last update with the C208B mod and there were no cart issues.