Engine overheating when in drive and at idle

[Veronica2.0]

Have a 2008 Jeep Wrangler Sahara Unlimited (original owner) with a remanufactured engine and transmission installed in Oct. 2020 at 176K miles. Ran well for about 24K miles more, then thermostats started going bad approx. every 4 months, sometimes also burning out the radiator fan. Have replaced several thermostats, fans, and a radiator. Each time this happens, the system is serviced and "sealed". Problem has evolved to overheating, sometimes with a dash alert from the thermostat, sometimes not, when in drive and idling for 10 minutes or more (as in stop/go traffic or at a drive-thru). Most recently, overheated with no dash alert and coolant blew out through the radiator cap. Looking for suggestions for a permanent fix.

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