UTF8 glyphs turn from colorful to monochrome on re-render

[h0lg]

I notice an issue with UTF8 glyphs since upgrading to 11.3.5 on Windows that I can't easily reproduce - I'm here to fish for ideas on where to look.

My Windows app uses simple UTF8 glyphs on e.g. buttons as icon substitutes. They render in color first.

But after some interaction, the glyph turns into their monochrome variant on redraw.

I haven't overwritten any of the default fonts for the app, nor is it using the Avalonia Inter font.
When inspecting the AccessText in question in the Diagnostics tool, I see the rendering difference reflected in the Text or DataContext properties - but coulnd't identify other settings that actually changed.

When downgrading to Avalonia 11.3.4, this behavior disappears. All current versions including and after 11.3.5 are affected.

@Gillibald Looking into 11.3.5 superficially, I see that you made many changes related to fonts. Do you have an idea what could be the issue or where I should look?

[Gillibald]

Can you provide a minimal sample that reproduces the issue?

[h0lg]

Hello @Gillibald and thanks for replying!

I have tried, but failed to reproduce a minimal sample using Avalonia UI :/ As I said, I was just fishing for ideas.

You see, I'm using it wrapped via Fabulous.Avalonia for SubTubular and can even there only reproduce it by

• re-loading a previous (YouTube) search spanning multiple scopes (channels, playlists, or a list of loose videos) from the Recent tab (first in above screenshots)
• and then moving the pointer over UI elements containing UTF8 glyphs.

Asking you to have a look at that setup is a bit much - so I won't do that. But if any of what I'm describing rings a bell, I'd be happy for a pointer in the right direction!

---

If you still want to have a look at the issue - I can reproduce it on the avalonia-11.3.7 branch (containing both an update to 11.3.7 and downgrade from that to 11.3.5) - but not on the master still using 11.3.4.
You can open the Avalonia Diagnostics via F12 when Debugging.