String structure_block.mode.save is used in "edit world" screen

Are you sure it actually uses that key? try editing the string value via resource pack.

I am not sure. I only see the "[Uložit]" in the only one place in Crowdin (all strings).
I don't know, how to edit string value via resource pack. I never worked with resource packs. Please, give me a link with instructions.

This does not seem to be an issue any longer in later versions.

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