Service Messages empty in database

[SebiderSushi]

After a group i had been a member of was just recently deleted, i wanted to find out how telegram_backup handles those messages like "<xxx> removed <yyy>" and stumbled upon the fact that in the database there is no data in "service_message" entries, they just have their id, message_id and api_layer filled out.
Is that intended behavior? - If so: Are there any plans on ever fetching the content of such service messages?