Recently, more and more GUI applications (okular and inkscape, among others) started disabling terminal echo while they are active. This seems unnecessary at best (if you don't background the process, you wouldn't type in it anyway and if you did, who cares? And if you background it, it has no effect anyway). But what is worse is, that if you happen to do something wrong and instinctively kill it with ctrl-C (I do that if I accidentally call okular on many files, for instance), the echo stays disabled. It's not the end of the world, but needing to blindly type
stty echo every time this happens is making me nervous.
Is there a way to tell the terminal to disable toggling these settings? I think it might be possible to modify the termcap but that's where my knowledge about it ends. Of course, this probably makes invisible password visible but I want to know how to do it anyway, having one tamper-proof terminal open would be enough.