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From the moment I have tagged items in my list, a new empty tag appears in the list of tags (after having reloaded the page).
To make things simpler, we prefer to no allow empty tag. So, let's consider this as a bug.
I pushed a correction that removes the possibility to add an empty tag to a task. That should be enough. Could you update your app, remove empty tags and try again ?
do not allow empty tags #16
Problem is not solved neither on my instance nor demo instance.
Actually, I wasn't typing a empty tag. The problem comes from the moment when at least, one single item contains any tag. So you may have one item "#test Example of tagged item" and no other items in every lists. In this case, the empty tag will show up in the left list of tags.
Was there any special chars in your tag ?
No, the tag was "#task". It is also present in the demo instance.
I think it's due to an old task that still has the empty tag. I pushed some change to not display the empty tag anymore. Could you update and try again ?
By the way I solved the problem of undeletable tasks. Thank you for reporting this too.
Still present, after updating of the app and cache clearing...