[Evolution] Signatures are not saved

["Paulo Cesar G. Costa" <paulo costafamily org>]

Hi,


I cannot make signatures to work. They do not get saved at all.

> Edit > Preferences > Signature Tab > Add
- Opens the Edit Signature window and let me create a signature
- I wrote "test" as "Signature Name" and "signature goes here" as a dummy text
in the signature window.
- Clicked on the Arrow button to save and close (also tried the menu option)
- "test" appears listed in the "Signatures" window, but selecting it does not
show the dummy text, just a blank window 
- Added the signature to an account and wrote a message. The signature's name
appears as an option, but adding it does nothing.
- Send the message to myself and double checked nothing was included as
signature.

If I try to click "Edit" on the Signatures tab when "test" is selected (or any
other signature), instead of an edit window I get the "Edit Signature Script"
window asking me to input a file...
I repeated the above many times, with plain text, with HTML text, etc. All to no
avail.

I am either missing something very obvious or have a broken permissions system
(unlikely since everything else works).

Please, let me know what am I missing and/or how to repair it.


Paulo

Configuration:
Evolution 3.30.1-1build1
Ubuntu 18.10 - kernel 4.18.0-13-generic
install source: ubuntu-cosmic-universe