Mouse click not always working

[baldric 0]

I am using v1.7.4 with a Windows 10 server and a Windows 7 client, most of the time it works fine but every so often I can not click the mouse on the client PC, the mouse hover events, wheel and all other functions seem to work, just not the mouse click. Is this a known issue and is there a fix or workaround? FYI after a while it starts responding again without me making any changes to the configuration. Baldric