Formatting Issues

Fix PowerPoint Randomly Changing Text Kerning and Spacing

Maira Mehtab Sep 20, 2026 869 views

Question details

Users experience unexpected shifts in text kerning and character spacing within PowerPoint presentations, particularly affecting the Segoe UI font.

Product: Microsoft PowerPoint
Device & OS: Windows
Scenario: Copying text boxes between slides, duplicating slides, or reopening specific presentation files.
Observed behavior: The spacing between characters (kerning) randomly shifts, distorts, or breaks, often appearing presentation-specific or tied to locked slide elements.

Before you start

Before troubleshooting, ensure that your Microsoft Office suite is updated to the latest version, as font rendering and display bugs are often resolved in official software patches.

Solution 1Recommended

Unlock Text Boxes and Slide Elements

Use this solution if elements were copied from other slides and might have restrictive formatting locks applied to them.

In Microsoft 365 and recent PowerPoint versions, text boxes or slide elements can become locked, leading to erratic formatting behavior when copied or duplicated.

Open the Selection Pane

Navigate to the 'Home' tab on the PowerPoint ribbon, click on 'Select' in the Editing group, and choose 'Selection Pane'.

Identify Locked Elements

In the Selection Pane, look through the list of objects on your slide. A padlock icon next to an item indicates that it is locked.

Unlock the Elements

Click the padlock icon to unlock the affected text boxes or shapes, which can restore normal text kerning.

Solution 2

Download or Save As a New PowerPoint File

This method forces PowerPoint to rewrite the file structure, potentially clearing underlying formatting corruption.

Solution 3

Check the Slide Master for Locked Placeholders

Use this if the formatting issue persists across newly added slides, pointing to a Master Slide issue.

Free Microsoft Office alternative

Try WPS Office for Stable Presentation Formatting

If Microsoft PowerPoint continues to struggle with font rendering and text kerning glitches, consider switching to WPS Presentation. It is a highly capable, free Office suite that offers seamless compatibility and stable formatting for all your presentation needs.

1. Download WPS Office: Visit the official WPS website and download the free WPS Office suite for Windows.
2. Open Your Presentation: Launch WPS Presentation and open your affected .pptx file directly.
3. Edit Seamlessly: Enjoy stable text kerning and character spacing without the hassle of locked elements or random shifts.

Fully compatible with Microsoft PowerPoint (.pptx) formatsStable and consistent font rendering across devicesLightweight, fast, and completely free to useFamiliar user interface makes migration effortless

microsoft office alternative - wps office

Frequently Asked Questions

Why does the kerning of Segoe UI change randomly in PowerPoint?

This is often a rendering glitch tied to specific presentation files in PowerPoint. It is frequently triggered when copying locked text boxes between slides or duplicating elements from the slide master.

How do I unlock a locked text box in Microsoft 365?

To unlock a text box, go to the Home tab, click Select, and open the Selection Pane. Locate the object in the list and click the padlock icon to unlock it.

Can copying slides cause font formatting to break?

Yes, copying slides or text elements across different presentations with conflicting formatting or locked elements can cause the destination file to misinterpret font spacing.

Will changing the font fix the kerning issue?

If unlocking elements doesn't work, temporarily switching the affected text from Segoe UI to another standard font like Arial or Calibri can often bypass the spacing bug.

Document & File Issues