Zooming in to max level using zoom widget pops user back several levels

[AdamEggum]

When using a constraints object with maxZoom of 15, snapToZoom true (default), and a minZoom of 6, clicking the "+" icon in the zoom widget pops the zoom level back several levels.  (NOTE: you must wait for map to stop moving at level 14 before clicking the "+" icon).

See this codepen for example: https://codepen.io/anon/pen/MzxKbd

1.  Is this an arcGIS JS 4.9 bug?  If so, might it be fixed in the upcoming 4.10 release?

2.  Is there a workaround for this issue besides setting snapToZoom to false?  In my current application we are doing this, but it seems to be leading to other problems; for example, making it possible to zoom in beyond the max zoom level.  We also cannot change the minZoom and maxZoom levels.

[RobertScheitlin__GISP · Accepted solution]

Adam,

  Debugging through the MapView Source I can see this is a bug that you need to report to esri tech support ASAP it might be able to get fixed for 4.10 which is scheduled for mid Dec.

[AdamEggum]

Thanks Robert, I reported the bug.  Is the non-minified source available publicly?  I have seen a minified version here [1], but I haven't seen the source for anything besides TypeScript widgets.

1 - arcgis-js-api/MapView.js at 4master · Esri/arcgis-js-api · GitHub 

[RobertScheitlin__GISP]

No there is not. But reading minified code after you beautify it is not to hard. This how I verify API bugs.

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