The default for displaying a file attachment that is not an image is to show a square with a partial display of the filename - it would be much more helpful to have a list view of issue attachments with various columns for stats on the files attached, like size, date uploaded, filename etc.
@owen Considering that you are using JIRA On-premises (Server or DC) edition of JIRA, you can configure file attachment settings in Advanced settings of your JIRA instance (please note: you will need JIRA System Admin global permission to modify these settings), and specifically, you can switch "Enable Thumbnails" option to OFF.
Please see this Atlassian document for more details on Attachment settings in JIRA on-premises edition: https://confluence.atlassian.com/adminjiraserver/configuring-file-attachments-938847851.html
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