Describe the bug
The app has a black frame outside of the ui
To Reproduce
Open the app
Screenshots

Desktop (please complete the following information):
it spams the following log:
(com.github.alainm23.planner:7584): Gtk-CRITICAL **: 14:13:46.580: _gtk_widget_get_preferred_size_for_size: assertion 'size >= -1' failed
system information
OS: Fedora 31
DE: XFCE 4.14
GTK2: 2.24.32
GTK3: 3.24.13
GTK4: 3.96.0
dnf package info
elementary-planner: 2.2.14-1.fc31
elementary-xfce-icon-theme: 0.14-1.fc31
elementary-icon-theme: 5.1.0-2.fc31
elementary-theme: 5.4.2-1.fc31
i confirm that "byte", the music player has the same problem
I found that the following css class in elementary theme causes the problem :
decoration {
border-radius: 4px 4px 0 0;
box-shadow:
0 0 0 1px @decoration_border_color,
0 14px 28px rgba(0, 0, 0, 0.35),
0 10px 10px rgba(0, 0, 0, 0.22);
margin: 12px;
}

Then, I set box-shadow to none and margin to 1px (to able to resize). Now, it is working.
window decoration {
box-shadow: none;
margin: 1px;
}

You can save this css snippet to ~/.config/gtk-3.0/gtk.css file to make it permanently.
Duplicate of #268
@tncga Thanks a lot, that's a great solution, I'm trying it out now on elementary OS and Planner looks a little weird. I think we can add that style when Planner runs on another distribution.
Guys could confirm if this works for everyone?
It didnt work here but i think its because im using the flatpak version, what path should i use instead?
I'm developing a patch right now. Can you please help me test it? I'll send you the instructions right now.
@alainm23 yeah, of course.
Try it please:
git clone https://github.com/alainm23/planner.git
cd planner/build-aux/flatpak
flatpak-builder --install repo com.github.alainm23.planner.json --force-clean --user
flatpak run com.github.alainm23.planner
okay, going to try it now. Will give feedback
$ flatpak run com.github.alainm23.planner
error: app/com.github.alainm23.planner/x86_64/master not installed
I uninstalled the app before trying, should i install it again? does it works like a patch?
No need to uninstall but if you did there is no problem.
i did uninstall it, am i missing some install command?
Try it please:
git clone https://github.com/alainm23/planner.git cd planner/build-aux/flatpak flatpak-builder --install repo com.github.alainm23.planner.json --force-clean --user flatpak run com.github.alainm23.planner
Yes, you have to follow the commands I sent you.
yes, i did it
Great, now run Planner
flatpak run com.github.alainm23.planner
> $ flatpak run com.github.alainm23.planner
> error: app/com.github.alainm23.planner/x86_64/master not installed
@zayn666
This is rare, when you run this command it gives you some error or message.
flatpak-builder --install repo com.github.alainm23.planner.json --force-clean --user
In my case Planner is installed correctly and gives me this message in the terminal.

yes it gave me some errors regarding the install of gnome sdk, installed it and now its io.elementary.BaseApp/x86_64/juno-19.08
installed it all, building now
okay so, runned it and the bug still remains
@zayn666 I just uploaded an update, please rebuild the application and run it again.
flatpak-builder --install repo com.github.alainm23.planner.json --force-clean --user
flatpak run com.github.alainm23.planner
okay, building

Working great! Confirming that it works
okay so, i assume the update is being pushed, how should i clean it? I dont really work with flatpak that much
i removed the package as normal.