FYI: I back ported the mpm_winnt fix for lingering close to 2.4.x and also made mod_http2 current with the patch I provided to Stefan Priebe the other day and an additional fix for a possible hanging request/timeout. The version in 2.4.x is also available at github:
https://github.com/icing/mod_h2/releases/tag/v1.10.3 I invite all the usual suspects to another test round on this one. But maybe have a nice weekend first? Cheers, Stefan