SQLite database file locked and not getting released when database is closed

[snydesc]

This started happening in version 9.0.0 of EFCore.BulkExtensions.Sqlite.

Calling

using (var transaction = context.Database.BeginTransaction())
{
   BulkConfig mDefaultBulkConfig = new BulkConfig() { BatchSize = 250000, SqlBulkCopyOptions = EFCore.BulkExtensions.SqlBulkCopyOptions.Default };
   await context.BulkInsertAsync(listOfEntries, mDefaultBulkConfig, null, null, cancellationToken).ConfigureAwait(false);
   await transaction.CommitAsync(cancellationToken).ConfigureAwait(false);
}

SqliteConnection.ClearAllPools();
await context.Database.CloseConnectionAsync();

Keeps a lock on the sqlite database file. I try to zip up the database file and get an IOException ("The process cannot access the file XXX because it is being used by another process").

Same exact code runs fine under 8.0.2 of bulk extensions (I haven't tested the versions between 8.0.2 and 9.0.0).
Replacing BulkInsertAsync with context.AddRangeAsync() and context.SaveChangedAsync() fixes the problem.