Line and Stacked Column Chart Labels - Position "Above" doesn't work in some cases?

Hello!

On the images below you'll see 4 charts for 4 different metrics, all of them being reported in 5 different categories: Chem, Corp, D/S, GSC, U/S.

I have chosen to Line and Stacked Column charts as a solution to report them because I needed to show the total amount per column, beyond the individual amount per category. So I used the Line part of the chart to show the total amount and I formatted as seen below. However, even though I chose the position "Above" for the Total (Line) labels, in one of the columns for one chart they don't show at all, and on another one they are showing below, as you can see on the green circles on the images.

Any idea of how to fix this or why this is happening if I specifically set the position to Above?

Or even another solution to get to a similar result?

Thanks!