Normally, the CTRL+W shortcut can be used to close the currently selected window. However, this does not work for read-only documents. These can only be closed from the "File" menu.
I can not confirm with Version: 5.1.0.0.alpha1+ Build ID: 51df957e1a40d2f3511345c1600c05dd35f34b6b TinderBox: Linux-rpm_deb-x86_64@70-TDF, Branch:master, Time: 2015-10-19_04:22:32 Please could you test with dev version? http://dev-builds.libreoffice.org/daily/master/ Thank you
Could close here as well. Win 7 Pro 64-bit, Version: 5.0.2.2 (x64) Build ID: 37b43f919e4de5eeaca9b9755ed688758a8251fe Locale: fi-FI (fi_FI) Set to NEEDINFO. Change back to UNCONFIRMED, if the problem persists in a newer version. Change to RESOLVED WORKSFORME, if the problem went away.