When I try to cut text in the script pane using either Ctrl+x, Edit>Cut, or the Cut icon in the tool bar the text is not removed from the script pane. It behaves the same as Copy - copies the text to the clipboard, but does not remove the text from the script.
I do not have this problem in any other application, and do not use any special clipboard utilities.
This appears to be the same issue referenced in the topic, "PowerShell 5.1 ISE Cutting out text doesn't work" (https://social.technet.microsoft.com/Forums/en-US/396d9c4e-24f4-4439-aa13-26a99571d1b4/powershell-51-ise-cutting-out-text-doesnt-work?forum=winserverpowershell), but I did not see any way to resolve the problem listed in that thread.