No, i can't confirm. I'm stil on stable 12.0.8
I can confirm stable 12.1.5 has the same issue (regarding to dual app) as the latests betas. Many apps crash.
I'm using 12.0.8 stable too, works fine here with dual apps.
Stable 12.1.5 does NOT work fine with dual apps (same problems as latest beta, many apps will crash).