I was filling in tags for an image I was uploading, and I noticed that if any of the tags I listed had a capital letter, "Related tags" would yield nothing for any of the tags, even if the others were all lower-case. Using capital letters under "Tags" yields nothing, as well.
Making these things case-insensitive or automatically-to-lower-case doesn't seem like a hard thing to change. Or maybe I'm just misunderstanding something at my end?
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"Related tags" doesn't like tags it can't find, period. If I click it when a bad tag is in the box, it finds nothing. If I remove the tag and click again, it will only look up related tags for the first tag listed, and I have to refresh the page to get it to work again...
Updated by LaC