Lately, when I open the Minecraft launcher my username (“kpreid”) is sometimes replaced with “O” (just the one letter). The password is remembered correctly — if I retype the username I can log in. If I retype the username, log in, quit, and relaunch, then it remembers correctly for a while. I have not found how to reproduce the problem.
Has anyone seen this problem and figured out how to avoid or fix it?
Mac OS X 10.7.2
“New” (shows mcupdate site) Minecraft launcher, patched for 64-bit Java
Launched through Steam
2012-01-24: I launched MC through Steam and noticed the “O”. I immediately quit and relaunched it directly and saw “kpreid”, trying both several times to confirm the correlation. I then tried changing the Steam shortcut launch options to add a command-line argument, and that argument showed up as the login name (persistently), which suggests that perhaps Steam is generating a bogus “O” argument some of the time, or the way in which Steam launches MC results in it accessing files differently. The
lastlogin file had identical contents before and after I logged in correctly.
2010-01-25: I saw a few occurrences of garbage including Steam-ish pathnames appearing in the login field.