737 Max 8 LNAV doesn't work unless you use HDG mode first


ISSUE DESCRIPTION

Description of the issue:
LNAV mode doesn’t work unless you activate HDG mode first.

If applicable, which aircraft is experiencing this issue:

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
No mods

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
Every time I take off.

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

1.Career mode. Configure flight computer
2.Take off. Turn on CMD, VNAV and LNAV
3. It will not follow the LNAV route even if you’re on top of it.
4. If you turn on HDG mode, even for a split second, then go back to LNAV it will work.

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using, if relevant:

[PC Only] Are you using Developer Mode or have you made any changes to it?
No

[PC, MSFS 2020 Only] Are you using DX11 or DX12?

[PC Only] What GPU (Graphics Card) do you use?
4080

[PC Only] What other relevant PC specs can you share?
i9-10850k / 64gb

MEDIA

Please add a screenshot or video of the issue occurring.

[END OF FIRST USER REPORT]


:loudspeaker: For anyone who wants to contribute on this issue, Click on the button below to use this template:

Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

If relevant, provide additional screenshots/video:

For me LNAV will not engage unless you turn on flight director. So before takeoff, I have auto-throttle on, Flight director on and LNAV on. when I am about 500 to 1000 feet high, I can enable autopilot. never messed with heading.