As reported on Commons:Upload_Wizard_feedback#short_descriptions
Latest updates force users to enter descriptions of at least five characters, which are often unnecessary in languages like Chinese and Korean. How about transforming this filter into a warning that users could override?
I could confirm than indeed, entering a short description in Japanese triggers:
In languages that use ideograms, e.g. Chinese and Japanese, and Korean with its unique alphabet, five characters are often more than enough. For example, I often upload closeups, which serve as nothing but merely portraits. The context becomes irrelevant since the photos zoom in on them. I want to be as concise as possible so I write down only their names as descriptions.
The filter only applies to UploadWizard. Uploads via f2c, v2c, etc. and modifying description pages are not affected. It is true that I could change description however I prefer after uploads, but it'd be better if the filter could be turned into a warning that users could override, or a filter of 5/6 bytes (one ideogram takes up 3).
Examples:
https://commons.wikimedia.org/wiki/File:Sharon_Kwok_20140503_1.png
https://commons.wikimedia.org/wiki/File:Joyce_Cheng_20180908.png
I realised this dumb filter could be circumvented by inserting whitespaces. For example, 陳大明 is not allowed but 陳 大 明 is ok. I'm just gonna bypass it this way if I have to.