POST-Request get aborted, when logging is active

[DanielBloemer]

We encountered an issue with logging.
If logging is enabled, POST-Requests with small bandwidth got aborted after sometime.
The problem occurs on:
Debian 9 with apache 2.4.25-3+deb9u9 and libapache2-mod-gelf 0.2.0-1
Debian 9 with apache 2.4.25-3+deb9u9 and libapache2-mod-gelf 0.3.0-1
Debian 10 with apache 2.4.38-3+deb10u4 and libapache2-mod-gelf 0.3.0-1
If you upload a File larger than 30MB via a POST-Request with reduced bandwith Fast 3G and lower, the request got aborted after sometime.
Disabling the logging with GelfEnabled Off gets it working again.
Removing the module does also get it working again.

[jazzmuesli]

Are there any more updates on this issue? I've just managed to upload 40mb in ~7 minutes on emulated good 3g in firefox - so far no problems:

I've tried it on apache2.4/freebsd.