Persistent translation issue in Valencian for certain H5P content types

Hi, 

I am writing to report a recurring issue related to translations in Valencian. When creating content in H5P, some default interface buttons and labels in certain content types — such as Page and Drag the Words — remain displayed in Spanish, even after being manually translated into Valencian.

Although I can modify the labels and save the activity, the interface elements revert to Spanish once the content is reopened. For example, if I replace “comprobar” with the correct Valencian form “comprovar,” it automatically changes back to “comprobar” after saving.

This issue does not affect all content types; for instance, in Flashcards, the translations are saved and shown correctly in Valencian.

Could you please confirm whether this is a known issue or provide any possible workaround to ensure that the translations persist correctly?

Thank you very much for your assistance.