Add Color marker shortcut doesn't save. Marker reverts to default color
I use colored Clip marker to highlight important moments of clips using color code. I setup keyboard shortcuts to do this.
Everything appears normal when I do this. But if I open another clip, and come back to the first, all the markers now have the DEFAULT green color, negating the effort.
The only way to save the color change permanently seems to be to double click the marker, and select the color from the Marker pop-up window.
Any idea how to fix this ? I'm running 15.2 on a Mac OSX 10.15.7.
Thanks!

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Sylvain Laliberté commented
Added info: I also notice that when I add or change a color using shortcuts, the marker color appears green in the Marker window, which is a clue is the color is not properly saved when using shortcuts.