Version:            (using Devel)
Installed from:    Compiled sources

make the remote controller modal

...so user has to explicitly close the controller -- clicking outside the controller would not close it.

Reasons:
a) consistency -- normally windows/widgets close only when user close them
b) a11y -- user with limited movement has difficulty to pinpoint mouse to exact location, such behaviour would be a relief
c) safety experience -- it is the problem with whole plasma, as somebody already called it, this is slippery effect, you have to keep mouse in specified areas, if not, you have to start work from the beginning, with explicit close it won't be a problem

ad.b) I have only (?) RSI and for me it is a struggle to work with disappearing controller, I don't envy people with more severe disabilities

And one remark, note that the problem is not auto-hide -- auto-hide was present in KDE3 for panels for example. But there the UI fault lies somewhere else -- you have to move mouse to point A to get work in point B, in KDE4 point A!=B (in KDE3 auto-hide panel A==B), and this with auto-hide is in effect an ordeal to work with (btw. the same applies to plasmoid handles, there also point A!=B).

This UI and excessive mouse movements (even for some healthy person) is unneeded because it either produces RSI or increases it.