Impossible to modify the active menu button via CSS when it leads to a post.

I found out.

the problem occurs when the "Flexbox" option is selected at the same time as the "Fonts" option.

How to solve this?

I found out

The problem occurs when the "Flexbox" option is selected at the same time as the "Fonts" option.

How to solve this?

Looks like a possible bug - we'll take a look.
Did you see my reply here?

https://generatepress.com/forums/topic/impossible-to-modify-the-active-menu-button-via-css-when-it-leads-to-a-post/#post-1522419

This will allow you to change icons without the need to load a font.

Yes, I saw.
But it is not what I need now, I would really like to use the font mode instead of svg.

My license is about to expire, I don't know if I will be able to answer here after it expires.

Do you believe it can take too long to solve?

This does indeed look like a bug.

Problem is that fonts need to be applied as a pseudo element, and the <button> element doesn't allow for that.

It may be necessary to hide the button when the font icon option is active:

.search-form .search-submit {
    display: none;
}

We'll take a look at a better solution in GP 3.1.0, although the above may be the best solution as the font icons are something we're replacing with SVGs.

Thanks for the Help Tom and David.

I hope you can solve this.

Thanks