Well, you know you've found the issue. I've run Teraflex track bars front & rear for five years & 40k miles with not a single issue. If you're using the stock 14mm fully threaded bolts to attach the track bar to the factory brackets I'd be more inclined to think you have a bolt rather than bushing issue going on. Might try getting some 9/16" grade 8 shouldered bolts with matching keps nuts & hardened washers and subbing them for the stock hardware. Be sure they're torqued with the suspension fully settled, that is, wheels on the ground.
Teraflex uses the same type of clevite bushing as the factory does. If installed properly they aren't prone to early failure. However, if they are put in a constant bind, as can happen if they're torqued with the wheels off the ground, they will fail prematurely.
Another thought, IIRC the Mopar 3" kit is made by Teraflex and doesn't have a steering / track bar correction. When I ran TF's 3" springs on my '09 they measured closer to 4". At that much lift mine had a noticeable kick back ("bump steer") through the steering. I installed a Synergy steering & track bar correction kit (using the Teraflex track bar) which eliminated it entirely. You might look into something like that.
'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.