Not really an issue for me as I have the 'Load tags from body' feature turned off, but I noticed that there were lots of seemingly random tags consisting of numbers being picked up from somewhere. Then I realised they are from the citations keys I use. For example, the citation {Röpke, 2014, #110328} in a note results in #110328 being shown as a tag in the Vault Explorer. Obsidian isn't treating #110328 as a tag, it's just text.