FTD's - Firepower dropping HTTPS traffic using TLS 1.3 Hybridized Kybe

[Jon Are Endrerud]

Hello

We have a lot of clients getting the following error when contacting diffrent sites:  ERR_SSL_PROTOCOL_ERROR, we have read that SonicWall and Palo Alto also have these problemes. Solution is to turn off "TLS 1.3 Hybridized Kyber Support" in chromium web browser, and/or I have tried to disable all SSL and "Early application detection and URL categorization" for 1.3 in FirePower.

We are using fw: 7.2.5, have created a TAC case and are waiting for answer.

Anybody else getting this ?

Regards 

J.