Since my upgrade to Kubuntu 15.04, my Muon Package Manager will not give me 'History.' I get a blank screen (except for a non-functioning and garbled widget of some sort. Reproducible: Always Give me an e-mail address and I can send you a screen shot of the empty 'History' window, if that might help.
Created attachment 93861 [details] here is a screenshot, I can replicate this all the time just by hitting ctrl+h
This is a duplicate of bug 343992
*** This bug has been marked as a duplicate of bug 343992 ***