This behavior—where the tooltip in a line chart shows the correct values for prior period comparisons, but not the correct dates (i.e., it displays the current period's date for both lines)—is a known limitation in GoodData. It is not considered a bug, but rather an area identified for potential improvement. The product team is aware of this issue, and feedback has been submitted by multiple users. Currently, there is no configuration or workaround available to change the tooltip to display the actual prior period dates; the tooltip will show the current period's date for both the current and prior period values, even though the values themselves are correct for their respective periods. Here are relevant confirmations from GoodData support: - "This is expected behaviour, as it reflects how our platform is currently designed. While the year displayed shows 2025, the value itself is correct for the previous year. Our product team is already aware of this, and feedback has been submitted." [Community Slack discussion](
https://gooddataconnect.slack.com/archives/C04S1MSLEAW/p1756718209645689?thread_ts=1756718209.645689&cid=C04S1MSLEAW) - "Our product team is aware of this and we do not consider this as a bug but rather some space for improvement. I will definitely create a product feedback on your behalf." [Community Slack discussion](
https://gooddataconnect.slack.com/archives/C04S1MSLEAW/p1746688172751069?thread_ts=1746688172.751069&cid=C04S1MSLEAW) At this time, the only option is to wait for a future product update that addresses this limitation. If this behavior is critical for your use case, you may want to follow up with GoodData support or your account representative to reinforce the feedback.