A problem that I’ve had (and have just found a solution) but feel it shouldn’t be needed. I’m on 6.2.5.
2 bars in a header, both sticky, both position: relative. First bar, 80px in height, second bar, 40px in height.
They should just both stick, without moving when the page scrolls. However, the second bar always goes below the first. Sometimes it then appears again, stuck, sometimes not.
I added this to the second bar:
Position to ensure it stayed there, width as it then didn’t go 100% and top:auto as it kept changing to top:0 (which is why it then wasn’t visible).
I feel that last bit is maybe the key and shouldn’t be happening at all as it’s not the natural behaviour?