Overheating Jeep only In traffic

Try bleeding air from system like this. Remove cap from overflow tank fill with antifreeze to full mark leave cap off and start vehicle and let idle you will notice level in tank start to rise this is normal once thermostat starts to open level in tank will drop add more antifreeze to full mark then put cap back on.

Also you may want to clean the radiator coils maybe clogged with dirt and bugs causing little to almost no air flow across the coils clean with garden hose and nozzle if A.C condenser coil sets in front radiator clean it also so that you can get good air flow to radiator.

I have cleaning the bugs out and I bleed it and took it to the shop and let them bleed it also.

Two different shops held it for a week each and they can’t figure it out.