UV version:

 universalviewer@dev

I'm submitting a:

• bug report => please fork one of these codesandbox examples with a repro of your issue and include a link to it below
• feature request => please use the user stories repo
• support request => Please do not submit support requests here, use stackoverflow

Current behavior:
Thumbnail labels in multi-part PDF manifests are not aligning correctly. See, for example:

This was tested in Firefox with the manifest https://digital.library.villanova.edu/Item/vudl:294631/Manifest

Expected behavior:
Thumbnail images and labels should align consistently.

Steps to reproduce:

Simply load manifest https://digital.library.villanova.edu/Item/vudl:294631/Manifest -- the problem will be immediately visible.

Related code:

// insert any relevant code here

Other information: