I enabled the on-screen keyboard applet in Cinnamon so as to write some text with French accents. But then it kept on coming up when I didn't want it, every time I went into any text field. I removed the applet from my toolbar - no difference. I found the cinnamon on-screen- keyboard and deleted its entire directory - no difference. I logged off and even rebooted - no difference. I switched to Gnome (from Cinnamon) - no difference, and now I sometimes got a second small keyboard coming up, which seemed to be something to do with antlr. I deleted its package. It still came up!
Nothing I do could get rid of this confounded nuisance until I rebooted again, after purging the antlr packages. But what package should have a bug filed? Using Debian testing on amd64, updated this morning. Thanks Oliver Elphick