Annotation text not getting placed correctly on relayout when page is scrolled

[etpinard]

First reported in https://community.plot.ly/t/text-move-to-wrong-position-when-scrolling-update-or-relayout-graph/4209

🆘 This is a regression 1.27.0 🆘

From http://codepen.io/plotly/pen/Kzjamd?editors=0011

• make the page scrollable (e.g. by opening the codePen console)
• click on a point, get an annotation (this works)
• scroll down
• click on a point, now the annotation text nodes are misplaced
• scroll up
• click on a point, now all the annotation text nodes are placed properly

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I can't find anything suspicious in the 1.27.0 changelog. Maybe the Drawing optimisations of #1585 are to blame?

[rreusser]

Hmm. What about the textpoint class? That could possibly have an effect on the transform/x/y properties.

Edit: never mind. This is annotations, not text traces. Hmm.

[etpinard]

This regression is indeed caused by 29abb5d of PR #1585

I'm not sure why though. I'll try to come up with a test case.