Power BI Bug - X Axis Range on Line Chart

Hi bvy ,

I understand your concern about the behavior of the X-axis in your Power BI line chart. Based on your description and the screenshot:

Cause of the Issue

The issue you're encountering is likely related to Power BI's handling of date-time values. When you set a custom range for the X-axis, Power BI applies the UTC offset of your system time zone (in your case, US EST). This can cause a mismatch between the range you define and the actual data displayed.

For example:

• Your data may be stored in UTC (or without a specific time zone).
• The custom range you define is interpreted in your local time zone. This results in an offset that can push your data outside the defined range, causing the chart to appear blank.

Possible Workarounds

Here are some solutions to resolve this issue:

1. Convert Timestamps to UTC

Ensure that both the data and the custom X-axis range are in the same time zone (preferably UTC):

• Use a calculated column to adjust the time values:

  UTC_Timestamp = [YourTimestampColumn] - TIME(5,0,0)  // Adjusts for US EST

  Replace 5 with your time zone's UTC offset (e.g., -5 for EST without daylight savings).

• Use this UTC_Timestamp for the X-axis range and the chart.

2. Use a Text Field for the X-Axis

If you don't need precise time values, you can convert the timestamps to text and use them as the X-axis:

Display_Timestamp = FORMAT([YourTimestampColumn], "MM/DD/YYYY HH:MM AM/PM")

• Use Display_Timestamp as the X-axis field.
• This ensures no adjustments based on time zones.

3. Disable Time Zone Adjustments

Check the Power BI report's model settings:

• Go to File > Options and Settings > Options > Regional Settings.
• Ensure that the settings align with your time zone and data format.

4. Set Static Ranges Dynamically

Instead of manually setting the start and end range, create measures for dynamic X-axis limits based on your data:

MinTimestamp = MIN('YourTable'[YourTimestampColumn])
MaxTimestamp = MAX('YourTable'[YourTimestampColumn])

Use these measures in your visual's slicer or dynamic range logic.

5. Force the Chart to Display Data

Sometimes Power BI's auto-scaling conflicts with custom settings. To ensure the chart displays your data:

• Temporarily remove the X-axis start and end range.
• Adjust the range after ensuring the chart displays correctly.

If none of these workarounds resolve your issue, it might indeed be a bug. You can log a ticket with Microsoft support. Let me know if you'd like additional guidance.

Please mark this as solution if it helps. Appreciate Kudos.