Hide "Header" when on buddypress pages at top of page, keep the scroll

On a side note, any idea why the icons are changing to black once the page is loaded. I think its a css conflict.

The ones on the top remain in color, while the ones under account switch to red.

You can see it on the activity page pretty clearly https://mydomain.com/activity/

Sorry not sure which icons you are referring to?

This is what I'm seeing in the linked page:
https://www.screencast.com/t/PLAmpVpG32

The icons are a different template conflict, I'll open a diff ticket for that.

One last question on this thread, can I now insert a different "menu" into this new header where the main navigation was removed?

To display different menus for different pages / posts / templates etc. you need a plugin like this:

https://wordpress.org/plugins/conditional-menus/

Awesome! This is exactly what I was looking for, thank you!

Amazing support here.

ok, I tried the plugin, but having an issue getting the menus to display. I add a new menu, under main nav, then set conditions to a BP page, then nothing changes.

Is there an esay test I can do with the plugin to make sure its working?

It should be working. We usually suggest that plugin or this one:
https://en-ca.wordpress.org/plugins/if-menu/

Worth checking with their support if you are experiencing issues.

I’ll take a look thanks.

No problem :)