Diff not shown when repository is synced with SVN
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### Note:
This issue is dedicated to one particular customer, allowing a direct line between the developers and the customer.
For sensitive information, such as the actual files in the project and the customer's company details, please refer to the [zendesk ticket](https://gitlab.zendesk.com/agent/tickets/158039) and [slack](https://gitlab.slack.com/archives/CK75EF2A2/p1595241024477700)
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Once the customer has synced their repository with SVN, and they make a change to one particular file, the GitLab UI is displaying the following in the MR:


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The issue is reproduced by creating a project with the files that the customer supplied, syncing it with SVN and then making a change to one specific file. For file names and more direct context, please see the public reply of July 17th.
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**Update:**
The customer reproduced the issue for another file as well. The only thing that seems to be in common with these files is that they are >1mb in size.
issue