Illustrator copy/paste does not clear clipboard

Question

I am running OSX Yosemite, and latest version of Illustrator.
I have a file, which has multiple artboards and symbols.
When I am copying text and pasting it into another text placeholder, it pastes all text previously copied on the clipboard. So, first copy/paste works fine, but all the times after this include a lot of text from previous paste attempts. It looks like, Illustrator is not clearing the clipboard when copying text into it.
Also, pasting in text from Mac TextEdit doesn't seem to work.
This feels a lot like a bug, and really slows me down. Are there some sort of settings for the clipboard, or other ways to get rid of this feature?

Answer 1

drawnworder,
If no brighter solutions appear, you may try the list.
The following is a general list of things you may try when the issue is not in a specific file (you may have tried/done some of them already); 1) and 2) are the easy ones for temporary strangenesses, and 3) and 4) are specifically aimed at possibly corrupt preferences); 5) is a list in itself, and 6) is the last resort.
If possible/applicable, you should save current artwork first, of course.
1) Close down Illy and open again;
2) Restart the computer (you may do that up to at least 5 times);
3) Close down Illy and press Ctrl+Alt+Shift/Cmd+Option+Shift during startup (easy but irreversible);
4) Move the folder (follow the link with that name) with Illy closed (more tedious but also more thorough and reversible);
5) Look through and try out the relevant among the Other options (follow the link with that name, Item 7) is a list of usual suspects among other applications that may disturb and confuse Illy, Item 15) applies to CC, CS6, and maybe CS5);
Even more seriously, you may:
6) Uninstall, run the Cleaner Tool (if you have CS3/CS4/CS5/CS6/CC), and reinstall.
http://www.adobe.com/support/contact/cscleanertool.html