Issue when downloading multiple episodes at once

[Hanouta]

I just tried downloading like 5 Episodes at once, castero correctly downloaded the first one(tbh I'm not sure if the first episode finished downloading before I added the second one). Afterwards the statusbar showed something like Downloading Episode xyz (+3 in queue), but after episode xyz was downloaded, it didn't download the next episode, it just kept downloading the same episode over and over again. I could also verify that by monitoring the file size in castero's Downloads folder, it just replaced the already existing episode over and over again.