Comment # 3 on bug 1163744 from Fabian Vogt

I can reproduce it even with WebEngine 5.14.0.

It seems to be related to the "Your system is broken: dlsym doesn't work!"
message.

It works with either QTWEBENGINE_CHROMIUM_FLAGS="--no-sandbox" or
QTWEBENGINE_CHROMIUM_FLAGS="--single-process".