It seems mIRC doesn't know what I right-clicked anymore when a new line appears in the meantime.
Yes, old problem going back several versions at least, most easily seen when a link appears in channel, is right clicked, but a new line appears pushing the clicked line up the screen before the new/existing window option is chosen.
Makes following a link in a busy channel a challenge - usually solved by scrolling up so that new lines don't move earlier text up the screen.
Using mIRC 6.12 with Win98se or WinMe (depending on location) here.
PM