Snowflake melting meddling.
Lars, very nice snowflake anomaly!
#1 Here is another mystical flare that was specific to one light pole only, Z5II with the 40mm @ f/2.2, ISO 12800.
#2 The same light pole in the other direction.
#3 Another anomaly that could look like Keith's creative camera above, but in this case it is the card reader of my Thinkpad X1 Extreme that becomes creative when reading UHS II cards. There are unfortunately one or two creative images for every download batch, not sure how to resolve that. Typically the preview part of the file download is OK while raw data part is corrupted, often just the upper or lower edge of the image.
#4 Taking the card out of the reader and reinserting it will allow the corrupted images to be read at first or second attempt as shown here. Nevertheless it is quite annoying as I have to apply some simple edits in NX Studio and go through each image before I know if the download of each image is patent as the initial views are based on the embedded jpgs.