I've noticed the font size on the alerts will always stay the same regardless of the source size on the stream scene.
For example, here I've added a big alert source to the stream and the font is displayed in reasonable size. If I add one with half the size the image will scale but the font won't, making it clip and pop out of the alert image space. This can be troublesome and create visual clutter on stream, especially if you're working with limited alerts/overlay space.
It would be great if you could make the font scale the same way the image does.
Thanks for reading,