Description of problem:
I cannot paste image to Libreoffice in Windows guest when copying from Windows client. Data stored in clipboard differs when compared to those copied from RHEL client

Version-Release number of selected component (if applicable):
client: Win7
virt-viewer 2.0-240

guest: Win10/Win7
rhev-tools 4.2-4
vdagent 1.1.4.1005

How reproducible:
always

Steps to Reproduce:
1. Copy an image in Windows client (ctrl+c)
2. Paste this (ctrl+v) to Libreoffice in Windows guest VM

Actual results:
nothing is pasted

Expected results:
image is pasted to libreoffice

Additional info:
* Image is pasted to libreoffice when copying from RHEL 7.5 client to Windows guest.
* Image is also pasted when copying from Windows 7 guest to RHEL 7.5 guest.

To examine deeper this problem I used InsideClipboard utility (http://www.nirsoft.net/utils/inside_clipboard.html)

In attached screenshot one can see that clipboard data differs:
Top InsideClipboard utility window - copying image from RHEL7.5 client (feasible to paste into libreoffice)
Middle InsideClipboard utility window - copying image from Windows 7 client (impossible to paste into libreoffice)
Bottom InsideClipboard utility window - copying from within Win guest

from vdagent log after pasting:
...
1496::INFO::2018-04-05 14:32:23,474::handle_control_event::Control command 4
1496::INFO::2018-04-05 14:32:23,474::handle_clipboard_grab::grab type 3 format=8
1496::INFO::2018-04-05 14:32:29,958::handle_control_event::Control command 4