A newer release, v0.6.30 is already released to fix an issue with OneDrive integration.

Looks like they finally finally made their slim image tag smaller than the main image:

ghcr.io/open-webui/open-webui:v0.6.30-slim    7c61b17433e8   46 hours ago    4.3GB
ghcr.io/open-webui/open-webui:v0.6.30         c1ac444c0471   46 hours ago    4.82GB

Though only saving .5GB of space is not very slim. I use OpenWebUI in my home lab, but this issue just made me question the quality of the project a tiny bit.