After update Thunar ceased to run gedit (it is still default for txt) when clicking on txt files. It just shows waiting cursor and does nothing.

$ guix describe
Generation 87    Apr 04 2019 21:51:02    (current)
  guix 325a2e3
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 325a2e35dcccb37498fed1c211aa4120103056ba

$ thunar --version
Thunar 1.8.4 (Xfce 4.12)

$ gedit --version
gedit - Version 3.28.1