I have checked my terminal settings, used screen and xterm, Debian Jessie and RHEL 6.5, started irssi without configuration and without scripts, using the default.theme, and I am able to reproduce following these steps:
Assuming stock, no user configuration file, default.theme
/statusbar topic add -alignment right topic
/j #channel1 ... /topic some topic
/j #channel2 ... /topic completely different text
Switch between channels 1 and 2, and see the topic get munged and not redrawn properly.
Also affects other statusbars, originally noticed when chanact was not redrawing properly, after switching to channels with activity, and not having it redraw properly.
I have checked my terminal settings, used screen and xterm, Debian Jessie and RHEL 6.5, started irssi without configuration and without scripts, using the default.theme, and I am able to reproduce following these steps:
Also affects other statusbars, originally noticed when chanact was not redrawing properly, after switching to channels with activity, and not having it redraw properly.