Known Issues

Use this list to see if an issue affecting you is already known and decide when to upgrade. Fixed issues are removed after 45 days. All fixed issues can be found in Release Notes.

Find the current status of Tableau Online on the Tableau Trust site, this includes info on site downtime and planned maintenance.

Issue ID Product Description Status
887191 Tableau Prep

When changing column order at Clean step in Prep interface, the order is retained in output file, but, when executing the same flow file from Command Line interface, the column order is not retained and revert back to original order in the data source.

923017 Tableau Prep

In Tableau Prep Builder, sometimes bigint data was rounded incorrectly.

930904, 1031927 Tableau Prep

String values with capital letters are treated inconsistently in out-of-sample values.

1111472 Tableau Prep, Tableau Server

Tableau Prep Builder failed incremental refresh when the published extract is encrypted.

1106641 Tableau Prep

New option to Preview data based on refresh type (Full or Incremental) to accommodate new, potentially different, write options users can specify, is non-functional in Tableau Prep 2020.2.1.

Fixed in 2020.2.2
1068437 Tableau Prep

Tableau Prep did not always return the expected number of custom split columns when the number of splits needed varied greatly across rows.

Fixed in 2020.2.2
1070364 Tableau Prep

"Group and Replace" sometimes resulted in the following error "System error: com.tableau.loom.doc.exceptions.LoomIOException: Problem with IO:Failure evaluating to database

hyper_execute_query: 0 collation mismatch, use COLLATE statements to resolve"

Fixed in 2020.2.2
1083254 Tableau Prep

Filtering 750 or more rows in a Clean step sometimes resulted in the error "System error: java.lang.StackOverflowError"

Fixed in 2020.2.2
1085364 Tableau Prep

Searching for RANK() or ROW_NUMBER() in the calculation editor did not provide enough information to help with writing a full calculation.

Fixed in 2020.2.2
1087177 Tableau Prep

The incorrect schema displayed when switching from "Create table" to "Add data to table" with an existing table.

Fixed in 2020.2.2
1088614 Tableau Prep

When connected to Snowflake, selecting a database sometimes reset the selected warehouse.

Fixed in 2020.2.2
1104549 Tableau Prep

Publishing a flow created when Tableau Online was auto signed in on launch sometimes resulted in one of the following errors "All publish steps must publish to the currently connected server "tableau_online_instance" and site "site_name". Update the publish sets then re-publish the flow.
All published data source inputs must be from the same server or site where you publish the flow. Either publish the flow to that server or site or connect to published data sources from the currently connected server "tableau_online_instance" and site "site_name"."

Fixed in 2020.2.2
1107251 Tableau Prep

When connected to a published data source, invalid calculated fields did not show an error.

Fixed in 2020.2.2
1109030 Tableau Prep

After launching Tableau Prep on a Mac, the zoom shortcuts "command and +" or "command and -" did not respond for other applications.

Fixed in 2020.2.2
1079706 Tableau Prep

Tableau Prep logs rotated based only on timestamp, not size limit.

Fixed in 2020.2.2
1019207 Tableau Prep

Flow execution error occurred, "Failure evaluating to database: "hyper_execute_query". Could not execute the given query. The result status code is 7." when multiple data sources unioned to include a live Teradata data source.

Fixed in 2020.2.2
1051728 Tableau Prep

Performance problem resulted starting in 2019.4.2 for some flows with Union.

Fixed in 2020.2.2
1049181 Tableau Prep

CSV output did not match the result displayed in Tableau Prep Builder.

Fixed in 2020.2.3
1119110 Tableau Prep

"Direct Connection" and "Publish Data Source" options were missing when a flow was published from 2020.2.1.

Fixed in 2020.2.3