I tried to reproduce this issue but if I compile it myself it always works.
Looks like the native install uses GTK3 but the source compiles from GTK+2 and that's causing the issue maybe
So if you want a usable geany install you could just remove the OS install and compile it yourself from source this worked for me:
Code:
sudo apt remove geany
sudo apt install gtk+2.0 intltool pkg-config automake autoconf libtool
mkdir geany-dev && cd geany-dev
apt source geany
cd geany-1.33
./autogen.sh --disable-html-docs
make -j4 && sudo make install
