We're investigating issues with Power BI not showing tables in your Snowflake workspace.
We're sorry for this inconvenience, we'll be updating this post with our findings.
UPDATE 17:26 CET
Snowflake confirmed they can reproduce the issue and are investigating further.
The issue affects transient tables (CREATE TABLE statement), but does not affect views. As a temporary workaround we suggest to log in directly into the Snowflake workspace and create views from all tables in the schema. These views should be immediately visible in Power BI.
UPDATE 11:20 CET
Snowflake are preparing a new version of the ODBC Driver which allows Power BI to see the tables. Use the support button in your project to contact us to obtain this driver.