Comment 13 for bug 1574278

I confirm this issue on two Lubuntu 16.04 fresh installs. I could correct it.

First yesterday on a Core2 Duo laptop I installed the OS from the official lubuntu-16.04-i386 image.
As OP writes

> After adding some text in a new document, the *entire document* (including gray page background, text, text cursor) starts to flicker very fast. The UI above does not flicker.

Adding even a single letter has the whole content area to constantly flicker. We could reproduce this anytime launching Abiword.

Second occurence was today in a qemu-kvm VM with lubuntu that I freshly installed from Ubuntu mini/netinstall ISO.

- Opening an existing odt document has the header constantly flicker, i.e. the top 4 centimeters high banner.
- Opening Abiword (blank) and write any number of letter has the top 4 centimeters high part of the document constantly flicker.

Here is how I could correct this wrong behaviour:
- Launch lxappearance, in 'Widget' tab shift to any other one than 'Lubuntu-*', apply.
Abiword stops to flicker.

Thanks to William Geiger and Arch posters for bringing up the gtk3 settings.