I have the same problem as it described in a ticket, but in the following case:
Server: Confluence v5.0.3 on Windows 2003 x64
Client: Google Chrome on Windows 2008 R2 x64, 16GB RAM
When I tried to cut a block of text from noformat or panel macros (I do not remember exactly from which type, but from one of the blocks) using Shift+Del (that must work like Ctrl+X) – data was deleted, but not copied to clipboard. I tried a lot of times, this issue was reproducable on my PC for 100%.
In a theory this is may be related to a usermode RAM available on a client (a lot of memory is allocated for a chrome with a big amount of tabs, so memory problem for a very-large RichEdit). But this is just a hypothesis. It is maybe absolutely incorrect/not related to an issue.
Another hypothesis that maybe it is "skipping" a shift button pressed, so it thinks that just "Del" button (without shift) was pressed, so it is not cutting, but deleting.
After that I afraid to use CUT, because I afraid to lost any information.
Later I tried to use Ctrl+X, instead of Shift+Del, seems it is working, but I'm not sure that I used Ctrl+X in the similar to a Shift+Del cases.
I was only able to replicate this on Fedora, to my knowledge Shift+Del doesn't copy text on either Windows or Linux. I've changed the description to clarify.
It doesn't Copy only, it is must work as Copy + Delete = Cut (saying about Windows).
Shift+Del it is equal combination to a Ctrl+X and a menu option "Cut" (on Windows)
I think it is required to fix ticket's details, because it is not a Linux problems, it is a common issue.
Thank you for your interest in this ticket. The Confluence Server and Data Center team released a major upgrade to the editor in 6.14. Due to the age of this ticket and/or lack of updates, we suspect that this issue is no longer relevant or was resolved as a result of the upgrade and are now closing this ticket.
If this issue is still a problem in your Confluence instance in version 6.15 or later, please tag me in your comment and we can reopen this ticket for review.
You can read more about the editor upgrade in the 6.14 Release Notes.
Thanks
Makisa Appleton | Senior Product Manager, Confluence Server and Data Center