Creature Script won't load with other locale (not enUS)

[humanpride]

Describe the bug
Launched the program for the first time and clicked "Creature Script" from the quick access menu. Infinite script loading. In the list of tasks running in the background, the step "Loading loot" is marked - "Done in less than 1 second". The step "Loading script ..." is executed infinitely.

P.S. I config the DBC path to %TrinityCoreBinFiles%/dbc/ruRU because with default /dbc path app throws an error Can't find SpellName.db2

Version (commit hash)
COMMIT=2b04642877370f88311c3c79e64669547d85ca27
BRANCH=master
VERSION=0.1.2897
BUILD_VERSION=2897
UPDATE_SERVER=https://dbeditor.ovh
MARKETPLACE=default
MAPDATA_SERVER=https://dbeditor.ovh
PLATFORM=Windows

To Reproduce
Steps to reproduce the behavior:

1. Launch the app
2. Config DBC path to ruRU locale
3. Try to load Creature Script 30299 'Overseer Narvir'

Expected behavior
Script editor just works.

Screenshots

[humanpride]

UPD
I changed the path to DBC to /dbc/enUS. Now everything works, but of course it loads the English localization. I need to work on the ruRU localization. How can I do this if there is no option to select the localization in the settings?