Many modules have left-hand side menus, e.g. Data Entry and About DHIS2. In any of these, if you collapse the side menu, the arrow to get it back also is hidden, so the user has no obvious way of getting the side menu back. This also affects the other modules and thus seems pretty critical.
https://bugs.launchpad.net/dhis2/+bug/1613172
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Knut Staring
Dept. of Informatics, University of Oslo
Norway: +4791880522
Skype: knutstar