"Uploaded a version of a file" notification for page with UML diagram?

Question

I hope someone can explain this behavior to me.  I created a new page with a UML diagram in it using the PlantUML macro. A couple of curious users apparently browsed the page, and shortly afterwards I got notifications like the below.

The versions of the page have NOT changed. The versions of the attachment DID change. And one comment reads "PlantUML Diagram (generated)." I know each UML diagram is saved as an image file and displayed on the page, but I don't understand why simply viewing the page would create a new version of the attachment. (It's possible that they clicked on the page to edit it, then cancelled out of the editing screen.)

Does anyone know what is happening here? Is it because the export name is specified in the macro settings? (UML Sequence Diagram Template.svg)? Thanks for any insights.

Richard W_161y2m · Answer

Same thing happens with my site. I think it's when people are browsing a page and click on an image while moving the mouse. Confluence interprets this as a "drag and drop" action and uploads a new version of the image. It's completely pointless and I'm wondering if there's a way to disable the "drag and drop" action when browsing a page.

Wayne May_0a6rqn · Answer

Hi @Michelle Rau HP

Anything ever come from this dastardly, annoying 'error'? I suspect manipulating an element in a diagram may trigger this action, but can't pin it down.

Thanks