We can’t update Discourse and also support every previous style indefinitely, we’ve got too many settings and variations as it is.
The good news is that visual styles are fairly flexible to being changed in themes, and what you’re looking for can be achieved with some additional CSS:
:root {
--d-nav-color--hover: var(--quaternary);
--d-nav-bg-color--hover: var(--quaternary-low);
--d-nav-color--active: var(--secondary);
--d-nav-bg-color--active: var(--quaternary);
--d-nav-border-color--active: var(--primary-medium);
--d-nav-underline-height: 0;
}
#navigation-bar li {
font-size: var(--font-up-1);
a {
padding: 6px 12px;
}
}
That gets you the same font size and colors as the previous version:
can you provide screenshots and describe the issue a little more? perhaps there’s a separate problem to fix? generally you can not revert