This is a bug based on bad designBut this is not a (single) bug, and if anything it is good design that the underlying technology does not make the clumsy assumptions people are hoping for. This is simply how copy & paste works; it is a means to pass data from one application to another, similar to drag & drop. The fix is completely legitimate, but should definitely be at a higher level.
If I may be so blunt, I think people are using copy & paste wrong :P It is as if they are using a CLI, happily disappearing information to memory somewhere to be called back by a vague command down the line. The nice thing with a GUI is you should not *need* to disappear that information, but can rather keep it on screen at all times.
By adding any clipboard manager, we face the problem that copy & paste operations can no longer carry detailed information. In essence, a regression. A regression bug is much, much worse than a feature request bug. (I could be mistaken, mind you. Will Glipper / others send the relevant requests back to the application originally owning content when it is asked to paste?). I don't like the idea of copy & paste being a clumsy / unpredictable operation, since it is sort of an accessible drag and drop. Without it, accessibility-troubled users have no means to transfer information between open applications.
Having said that, I rather like the clipboard manager used in Maemo, which pops up a little notification bubble when stuff is copied. This way, one can be certain that it has worked, which is rather nifty since copy & paste is usually disturbingly silent.
PS: *Why is Brainstorm being used as a bug tracker?! This upsets me greatly.*
Edit: This bug report (coincidentally, filed in the correct place) puts things a bit clearer, too. This is partly an issue of the individual applications...
Edit Edit: Sorry about all the post editing. I think it's how I wanted it now.