while opening a templet the templet column all collapse to one side

Hello Sharona32,

It's possible that the template is damaged. What we can do to fix this is make a copy of the original template by following these steps: 

1. Go to Lists > Templates.
2. Highlight the template you want to copy and click the Templates drop-down located at the bottom left.
3. Choose Duplicate.
4. In the Select Template Type pop-up window, choose Invoice or Purchase Order. Then, click OK.
5. Double-click on the template copy, and click the Manage Templates button in the Basic Customization window.
6. Edit the template name in the Manage Templates window.
7. Click OK twice.

Please see these sample screenshots for a visual guide:

Once done, you can delete the original template and check the column of the new one.

I'll be around if there's anything else you need. Thanks.