Not good to me, the current look makes the module label distinguishable from the module name:

The proposed change here is breaking that:

So to me that's not a good move for other platforms.

I know it will be a compromise. What if the color of the font is lighter?

I know it will be a compromise. What if the color of the font is lighter?

Maybe, not sure. The 0.85 also add in width about 1 character for the default scene-referred text. This is already an issue as the translation (in French for example) is even longer and already cut when the panel is shortened at bit.

I'm a bit uneasy to break something working just for Windows.

I will test different options to comeback before 5.4.1

This is how current master looks on my system (Fedora 43 KDE)

Just adding the font-family to the list since it currently list a generic font family still at 0.8em

This is changing the font color to grey 75

If someone wants to just copy/paste in the css field in preferences to quickly test on their system.

#iop-module-name
{
  color: @grey_75;  
  font-weight: lighter;
  font-family: "Roboto Light", "Roboto",                  /* best case scenario */
               "Segoe UI Variable",                       /* Windows 11 default */
               "Segoe UI",                                /* Windows 10 default */
               "SF Pro Display Light", "SF Pro Display",  /* Mac OS X default */
               "Ubuntu Light", "Ubuntu", "IPAPGothic",    /* Ubuntu default */
               "Noto Sans",                               /* Fedora default */
               "Adwaita Sans", "Cantarell",               /* Gnome default new */
               "Lucida Sans Unicode", "Arial Unicode MS", /* Unicode glyphs */
	        sans-serif;                               /* default default */
  font-size: 0.80em;
}

on macOS:

before:

after:

On Fedora 43 KDE with the latest commit with system font size:

Current master on my system with system font size:

I will post a view from Windows later tonight.

Windows with this commit