Even my monitor (ASUS VE248Q) when set to the sRGB profile shows the image fine, which seems a little odd to me. Even stranger, when in "Theater" or "Standard"

Even my monitor (ASUS VE248Q) when set to the sRGB profile shows the image fine, which seems a little odd to me. Even stranger, when in "Theater" or "Standard" profiles it doesn't appear. I don't think any of these settings likely change the color profile of the display, but probably just tweak brightness/contrast/etc levels - so sRGB isn't even really sRGB a lot of the time even if it "says so".