I can confirm that the issue also happens with gedit (which uses gtksourceview, I believe). So it seems to be an interaction with gtksourceview and the default lubuntu widget theme. https://imgur.com/a/2JuYX is the gedit behavior.
On Fri, May 5, 2017 at 6:11 PM, Krishnaswami Iyer <r.k.iyer.2...@gmail.com> wrote: > Your hunch was dead on, Kai. Changing the theme fixes the bug. My theme > was not custom, though, it was the default lubuntu theme. The bug repros > with themes "lubuntu" and "lubuntu-dark-panel" but not with "industrial" or > "redmond" or any others. For "lubuntu" and "lubuntu-default", there are a > few logs on stdin which I've uploaded to https://paste.ubuntu.com/ > 24520462/ and https://paste.ubuntu.com/24520461/ respectively. > > 1/ Do you think it is worth filing a bug against lubuntu 17.04? > 2/ If you know of any other app that uses gtksourceview (I have 3.0-1 > installed), I can test that app to see if it repros with all gtksourceview > controls or if it is specific to meld's use of gtksourceview. > > Thanks a bunch! > > > > > On Fri, May 5, 2017 at 1:37 PM, Kai Willadsen <kai.willad...@gmail.com> > wrote: > >> On 5 May 2017 at 14:22, Krishnaswami Iyer <r.k.iyer.2...@gmail.com> >> wrote: >> > Hello, >> > >> > Using Meld to compare two simple files (two lines of "Abcd") >> leads to >> > this UI - https://imgur.com/a/wyKFh. This is on an updated Lubuntu >> 17.04 >> > (kernel 4.10.0-20, gcc v6.3.0 64bit). It can be reproduced with the >> latest >> > meld from git trunk. >> > >> > It seems that the sourceview control is not repainting portions >> of >> > the UI leading to the previous window contents showing up there. >> > >> > Any suggestions on how I can debug this? I am able to see what >> seem >> > like refresh events firing in filediff.py (am not familiar with gtk) >> and on >> > focus events fire correctly. Is it simply an issue with gtksourceview? >> I am >> > happy to supply any additional data/screenshots etc. >> >> I haven't seen this before, so slightly hard to tell. >> >> I notice you're using a custom theme. Could you check whether changing >> to Adwaita fixes this, just in case? Otherwise, if you could post your >> GTK+ and GtkSourceView versions, that may help. >> >> cheers, >> Kai >> > >
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