Windows 10: Store update strange behaviour

So a little earlier I did my usual routine of boot pc and open store app. I always manually check for updates to apps. One come up for store app itself. I clicked update but rather than do
its normal close the store app and re launch on completion store app stayed open. In reliability history it said the update failed for the store app. Yet if I check settings in the store app it does show the latest version number ending in 8. If I check for app updates manually again it says I am all up to date. Quirky behaviour and wondered if anyone noticed the same

:)