I am getting a similar problem with Zen Foundation 5.2.12. The actual QR code works perfectly, but next to each QR code it lists my profile data. So any different profile I go to lists my profile info next to the QR code.
@greinick The "User Profiles for Confluence" plugin from Communardo does a complete rewrite of the user-profile view to allow the display of additional information e.g. from an LDAP directory so I'd bet that this is error source. Could you please run the following steps to verify this:
Open the qr code tab with incorrect mapped user
Open the plugin administration (UPM) in another tab, disable the User Profiles Plugin
Refresh (+clear cache) the qr code tab and test if the qr code now displays the correct user
@Daniel Samuels @greinick I'm sorry that it took me so long to see that I had overseen a detail in your error report. I'm now able to reproduce the problem, I've fixed it and I'm going to release it as a hotfix with release 1.3.1 in an hour.
Please feel free to test if the error still occurs and I'm sorry for having wasted some of your time. I'll be reading more carefully the next time, promise! :)