How to Fix Large Empty Space in Microsoft Planner Buckets
Question details
Users experience a large, unexplained blank area appearing above or within a Microsoft Planner bucket.

- Product
- Microsoft Planner
- Device & OS
- not provided
- Scenario
- Managing task buckets and viewing task cards in Microsoft Planner via web browser.
- Observed behavior
- A task bucket becomes unusually tall, displaying a significant amount of empty space even when tasks are moved, copied, or viewed in different browsers.
Ensure you have edit permissions for the affected Microsoft Planner board and check if the issue persists after refreshing your browser.
Disable 'Show on card' for Task Attachments
The blank space is often caused by attachment previews attempting to display on the task card. Disabling this preview restores the card and bucket to normal size.
When an attachment is added to a task, Microsoft Planner attempts to generate a preview thumbnail. If the document has very little text or an unusual layout, the preview can glitch, enlarging the task card and creating a massive block of unexplained empty space.
Locate the affected bucket and identify tasks that have attachments. Click on the task card to open the task details window.
Scroll down to the Attachments section within the task detail view.
Find the attached file and uncheck the 'Show on card' option. Close the task to return to the plan and verify the bucket size.

Recreate the Task from Scratch
If adjusting the attachment settings does not resolve the formatting glitch, creating a fresh task is a reliable workaround.
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Frequently Asked Questions
Why does copying the task not fix the empty space issue in Planner?
When you copy a task in Microsoft Planner, all of its properties, including the hidden formatting glitch or attachment preview settings causing the empty space, are duplicated as well. Creating a completely new task from scratch is required to bypass the issue.
Does changing my web browser fix the Microsoft Planner display bug?
No, this specific layout issue is tied to the task's properties and attachment preview settings on Microsoft's servers. This means the large blank space will persist across different web browsers (like Chrome, Edge, or Safari) and devices.
Can I still access my file if I disable the 'Show on card' option?
Yes. Disabling 'Show on card' only removes the preview thumbnail from the main bucket view. The actual file remains safely attached inside the task details and can be opened or downloaded at any time by clicking on the task.




