Bit of help needed mugo yellowing current year needles

Hey guys, I’m new to this forum and find myself asking for help already😁.
I’m having issues with my mugos that I can’t seem to figure out.
It started last fall and progressed super fast,started seeing yellowing from the tips,early fall/late summer, thought I had broken some needles while wiring, then after two weeks it looked like the whole branch was dying.
It slowed, stopped progressing over winter.
Roots were were in perfect condition,no bugs in site, figured it was a fungus. Applied copper based fungicide to stop the spreading over winter, and started applying fungicide systematically as buds became active and the green started growing. Last year’s needles have dropped in the affected parts, some branches died back completely and it’s started reappearing in current years growth.
It only seems to affect mugos, all of my other pine species seem to be doing fine.
Any ideas on what might be causing it?

Hi Kenez. If I were you I would put it on the forum q & a for Ryan to look at. Before it’s too late.

Sound advice Keith!

Also include pics of the whole tree so he can get a good overall view.