We are still using JS API 3.x and encountered this problem (gaps between the tiles of Basemaps), only when using Chrome:
It seems to have something to do with the scaling-parameters in Windows. Any ideas on how to solve this? It is also present in the ESRI-Sample (Basemap gallery), however not as pronounced.
We are about to migrate to JS API 4.x, but would love to resolve this issue quickly.
Thanks!
- Florian