Issue shows on the Diagrams browse page but the issue panel and the count badge show nothing (or the

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What you are seeing

An issue shows on the Diagrams browse page but the issue panel and the count badge show nothing (or the reverse).

#Why it happens

Two different definitions of "is this attachment a diagram" are in use. The search index accepts a broader, case-insensitive list , while the panels, the badge and the save path accept only the narrow, case-sensitive canonical extensions.

#What to do

Rename the attachment to a canonical extension (for example .mmd → .mermaid, .puml → .plantuml, .dio → .drawio) so both agree. Uppercase extensions such as .DRAWIO have the opposite problem. Rename them to lowercase.

#Settings involved

Setting

Where

What it does

Admin / project / site settings

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Diagram (gadget configuration). Diagram

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Diagram (gadget configuration). Language

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#Limits that apply here

Limit

Value

What happens

Diagram title length

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The Title input is capped at 50 characters. Titles are used verbatim as attachment filenames with no de-duplication or sanitisation, so two diagrams with the same title produce two identically named a

Browse page size

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Each JQL page requests 12 issues and the list reveals 12 rows at a time; Show more loads the next batch. (The shared hook's own default is 50; the Diagrams page overrides it to 12.).

Concurrent diagram previews on the browse pa

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Diagram content is downloaded one attachment at a time through a throttle, so thumbnails on a busy site fill in progressively rather than all at once.

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