A discussion on the Slovak portal on translatewiki.net suggested reciprocal fallbacks between Czech and Slovak localisations, instead of offering English as fallback.
@Nemo_bis submitted a change, @Raymond merged it as b321f48d, it has been deployed as a part of the MediaWiki train on Wikimedia projects the Thursday 2016-08-18.
@Danny_B expressed concerns Wikimedia communities haven't been consulted. This concern should probably be extended: other Slovak and Czech MediaWiki users input should be taken in consideration too, for example asking opinion to mediawiki users list. At the same time, some namespace localisation improvement are needed.
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