Certain font sizes nuke the text rendering altogether! :-o

[xparq]

In a DEBUG-built demo, with the "sfml-widgets' default" theme, second but last slider stop... (So, curiously: not the largest size! :-o)
Wow, in every theme, actually... In "Default" & "Classic", also the previous stop, too: font size 16, 17...

BUT! Doesn't happen in the test app!!! :-o :-/

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Some specific SFML versions I've had this issue with (unfortunately I didn't record any of the (many!) others):

• vc17-64-90f05ac4e8cc4a5c445a125f6e8ac661c8e95130, vc16-64-90f05ac4e8cc4a5c445a125f6e8ac661c8e95130

[xparq]

It's pretty crazy stable too, despite the mysterious difference between the demo app and the test app...

Note: the b. bar labels and the img. button text survive it, because they don't track font size changes. However, not at all unscaved even that, e.g. notice how "0" and/or the "%" sign still degraded in this other run (apart from the weird overwrites only on "w" for some reason; and again no errors on the console):

Rebuilt from scratch in release mode, and linked to a newly downloaded SFML snapshot, and if fails the exact same way! (And also doesn't fail with the test app!)

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And now, after (quite) a few updates, it has changed so that only one stop of the font-size slider exhibits the problem.

[xparq]

OK, it has finally shown its true nature:

It's now crashing with the non-debug build of the new threaded demo!

Still nothing with the test app! :-o

Can crash in the DEBUG demo build, too, fortunately! :)

(But didn't seem to do it so readily as in non-debug, when I tried.)

[xparq]

Demo run (DEBUG build) in the VS debugger: "Access violation" in SFML, deep down below getLocalBounds:

Then a plain run, outside of VS (telling this to note that this failure has manifested in 3-4 different ways already):

Also, then, back in the VS debugger, for once, at last, an error message from SFML made it through (or was it also just another effect, not the cause?! looks very damn closely related nonetheless):

Failed to add a new character to the font: the maximum texture size has been reached

And this too, in the "Diagnostics Hub" VS pane -- probably unrelated:

Failed to validate the Controller process being connected to.

[xparq]

In a new build, with my latest MSVC portable + recent SFML + my new Jumpstart MSVC makefile now it crashes even if I just decrease the font size a step or two, right from all else being defaults...
-> UPDATE: This seems to be unrelated now, and more likely due to the simplistic (unguarded) threading of the "toy animation"!

Still no issues with the test app!

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(Posted to the SFML forum -> https://en.sfml-dev.org/forums/index.php?topic=28983.msg179496)

[xparq]

Important: If I start the demo with the problematic font size in the default theme config, that "priming" removes the problem entirely! :-o