We are seeing the USA Topo Maps issue as well, in multiple surveys from users across our department. A lot of our surveys for the general public are intended to be completed via web browser, and it's a bit frustrating since it seems to be something introduced in one of the more recent Survey123 updates, as some of our older surveys are working fine and still show ESRI Streets or Topographic.
If it was always defaulting to ESRI Streets, Imagery, OpenStreetMap, Topographic, etc. it wouldn't be as big of a deal, but the USA Topo Basemap is blurry, outdated, and not very useful to general public users.
I have one survey published with 3.6 that shows ESRI Streets by default in the web browser, while the other ones published with 3.6 are defaulting to the USA Topo. I'm trying to narrow down what the difference is between them, but it looks like it might be caused by trying to set a different default basemap within Connect, instead of just using the default default. Otherwise, the one defaulting to Streets was originally published with an older version (3.4 or 3.5, maybe) and then republished later with some edits using Connect 3.6. I'm wondering if there's some underlying setting or code still leftover from getting created in those earlier versions, but I'm not sure what (if not everything) gets overwritten when republishing an existing survey from Connect.
Seems related to this bug which is currently in the product plan, so hopefully it gets resolved soon. At the very least, please have it default to World Topographic or something, if we can't specify a basemap in particular lol.
BUG-000126720: The basemap selected for a geopoint question in Surv..
-Aaron
-Aaron