sometimes plotter and MB don't update correctly after extracting a SED

[jbudynk]

When a SED is extracted, sometimes the MB and plotter don't update correctly, and are left empty. This seems to only occur when I sort another column first, then extract the highlighted points to a new SED.

Example:

• load PKS 1127-14 dataset (multi-segment SED)
• open the MB and select points with reported uncertainties
• sort one of the columns that's NOT "Spectral_Value". Select a number of rows.
• extract highlighted points to a new SED

The data show up again if you switch between SEDs in the SED Builder (i.e., switch to another SED and go back to the extracted SED).

[jbudynk]

And apparently this can also happen when you select points via a filter expression. I think this still needs some investigation...

[olaurino]

I can't reproduce this issue either using the current master branch (commit 69cf485fb). There is a chance the issue was fixed in ChandraCXC/iris#345. @jbudynk could you check that? I'll also make some tests on OSX.