If you have very long labels, then you get very broad columns.
My recommendation is to use keys like foo.bar.baz as much as possible anyways; but it still allows for very long values.
A few ideas:
have a max-width column set for key column and language columns in configuration file
add a button that fits the table on the current screen's viewport (minus left bar) by setting the column widths proportionally. (could toggle between expand and fit-on-screen)
If you have very long labels, then you get very broad columns.
My recommendation is to use keys like
foo.bar.bazas much as possible anyways; but it still allows for very long values.A few ideas: