I created a custom file in custom_locals, with my own translation, replaced the names of the standard buttons and also added text formatting in the hoverlabel, something like this - &f%local:tq.main.menu.milt%
But after I added text formatting to all the buttons through the hoverlabel - &()
Now when I move my cursor over the buttons, sometimes the standard yellow text may flicker

I would like the standard (yellow) color does not flash, because it spoils the visual style
If anything, I made the hoverlabel white to all buttons - &f, so when you hover the cursor, in idea it should only be visible.

When you quickly move the cursor to another button, the yellow color is visible:

And from what will be seen if you do it more slowly, and it seems as if everything is normal:

Basic Informations:

• Windows
• FancyMenu_forge_2.7.2_MC_1.12-1.12.2
• Forge Version 14.23.5.2860
• Minecraft Version 1.12.2

As I understood from my tests and observations, this is directly related to the loading of custom translation from "custom_locals", apparently the text loading is not as fast as the game and therefore flickers yellow (Standard) text color game.
But if you create a custom button without using a custom translation, everything works fine.

Here is a link to the layout file, since the problem is not solved - https://www.dropbox.com/s/fgwhjlbad6xl1w2/exported_fm_setup_1-6-2022-4-30-50.rar?dl=0
(I left only the necessary mods for FancyMenu, but the problem remains unresolved)

Okay, this is actually a MC bug I think. You will never notice this when you don't pay a lot of attention to it. Well, at least I didn't notice until you told me lmao

Fixing this would be..complicated, so I don't think I will do it, I'm very sorry.

It's way more visible in your GIF than it is in the actual game btw. At least for me it's just a split of a millisecond, that's probably why I never noticed it.

this is directly related to the loading of custom translation from "custom_locals"

I don' think so. I saw no visible difference between normal and localized labels.

You say it has nothing to do with "custom_locals" and you're right, but with the custom translation it is somehow more noticeable