When I search "Power Lookup" in this forum, there are 9 pages of hits and I simply do not have the time to go through them all to see if this item has been addressed or not ... my apologies in advance if it has.
If I am reading the NASB, for example, and I right click on a word and select "Power Lookup", the PL window appears listing many Bible versions and a few commentaries. For my example, I right clicked on the word "iron" in Isa 60:17 (NASB). The Power Lookup window looks like this ...

If I click on, say, ASV, to open a window with that translation, it will open a new window to the appropriate passage. Again, all well and good.
But, if I close the ASV window, the PL window now automatically changes to "References NASB95" and looks like this ...

I do not understand why PL is doing this (bug?).
Furthermore, if you look carefully, you will note that the references listed (b, c, and a) are not associated with any particular verses. In this case "b and c" relate back to Isa 60:16 in the NASB and "a" relates back to Isa 60:18 but you wouldn't know it by looking at this window.
Again, I do not understand why the PL window is switching to NASB References and, if it is correct in doing this, why the references are not clear as to which verse they pertain.