Fix 1936

Created by: Tirokk

Authored by MarcoBomfim Nov 14, 2019 Merged Nov 15, 2019

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🍰 Pullrequest

Simple PR to add max-height for thumbnail images, so we can avoid what happened in the bug report below.

Issues

• fixes #1936 (closed)
• changes required on #2153 (I don't know if we can change the origin branch from a PR, so I've closed it).