Sqlite transaction not released when there are other readers of the database

If I have multiple database readers, which are basically instances of Sqlite that open the db file in "read" mode, is it normal that for a single writer that opens the db in "create" mode to not be able to release a transaction until all readers close the database? I'm trying to figure out if it's normal behaviour of sqlite, or it's bug/limitation of a specific sqlite library I'm using. I don't understand why would a writer need to wait for readers to stop using the database file, doesn't make sense to me, because readers cannot alter data