WikiText 103 tokenizer hangs
any updates on this? It happens to me on [OpenWikiText-20%](https://huggingface.co/datasets/Bingsu/openwebtext_20p) dataset, but not on [OpenWebText-10k](https://huggingface.co/datasets/stas/openwebtext-10k). This is really strange because I don't change anything else in my running script.

transformers version 4.18.0.dev0
datasets version 1.18.0
See issue here: https://github.com/huggingface/transformers/issues/19702 