Changing tab shortcut not working

[Lucas]

When I use shortcut to change between tabs, it acually doesn't change (besides the highlighted tab indicate the current tab). I've tried changing the shortcut, worked in the moment, however after I close and reopen the terminal the behaviour kept occurring, when I launch the terminal and change between tabs using the shortcut it doesn't actually changes, the only way to change is using the cursor and selecting the tab.

OS Details:
NAME="Pop!_OS"
VERSION="19.04"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Pop!_OS 19.04"
VERSION_ID="19.04"
VERSION_CODENAME=disco
UBUNTU_CODENAME=disco
Kernel = 5.0.0-13

[Roman Kovtyukh (hellodeargrandma)]

Hello, Lucas!

Can you please attach your configuration file and tell us version of Terminator you are using?