Label drag and drop on plot not working the same between MATLAB versions

I am updating a large MATLAB code from 2013b to run on 2020b. I have simplified and attached a section of it so you can just call the function to show the area of interest. The code allows you to drag and drop labels across a plotted line. It works great in 2013b but something has changed since then, and I can't figure out what is happening. I can't get it to generate errors or respond to figure out what is going on. If someone could point out the issue, that would be very helpful.

[DGM]

Not sure yet, but the example works in R2009b and fails in R2015b. There was a quite a bit of stuff changed in 2014. It seems like the CBF aren't running at all, but every now and then I can manage to get them to fire. Strange.

Answer 1

[DGM]

Ah. Figured it out. Set the pickableparts property of the labels.

    te = text(xe,ye,['_{End}'],'rotation',45,'parent',ax,'hittest','off',...
         'userdata',pe,'color',[0 .7 0],'tag','Testpoint','pickableparts','none');

[Prof. X]

That's it! I appreciate you helping me out! Read your profile, you belong here. Have a great day!