Automatic annotation producing duplicate references in hierarchical schematics

[Arian Sanusi]

create a schematic with a hierarchical schematic, annotate the components. place another schematic. In at least some cases, this changes the sheet number. When annotating components according to sheet number (sheet number*100 or 1000) this gives multiple components with the same reference, e.g. twice r201

This is related to #1154131 but since it produces collisions, it is a bug IMO, not wishlist.

I propose to enumerate sheets according to the unique timestamp by default, overridable by a patch addressing #1154131.

As an aside, the "unique timestamps" are not unique. Copy a hierarchical sheet containing another hierarchical sheet, the the subsheet will get a new timestamp assigned, while subsubsheet retains its timestamp. I don't know whether uniqueness of the timestamp is used somewhere, if it is, this is another bug (and should be treated as an independent bug), otherwise a misnomer.

[jean-pierre charras (jp-charras)]

I cannot reproduce this issue.

[Launchpad Janitor (janitor)]

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