Possible XInput2 cursor bug ? (Was: Re: XInput 2 support (again))

[Madhu]

When reading gnus with a recent emacs
configure -C --with-x-toolkit=athena --without-native-compilation
--with-xinput2

If I select a line on the summary buffer, to display the article buffer,
the block cursor disappears and the cursor becomes hollow (as if it were
a cursor in an inactive buffer). The focus is still in the summary
buffer though.

I think This sort of thing happens even outside gnus but perhaps someone
with an xinput2 build and gnus can verify if this is happening, I
rebuilt  --without-xinput2 and don't see the problem.