When I use Trello at work, certain specific actions consistently fail to get persisted back to the server.  The two that I am always having issues with are:Removing labelsDeleting items from checklistsAs an example, let's say I create a new card and assign label A.  I then come back later and remove label A, but assign label B.The outcome is at first an orange message in the top right corner:Sending... This is followed by a red message in the top right corner:Connection interrupted.  Retrying 1 action.This message never goes away.  If I refresh Trello, the card will have both labels A and B assigned.My workaround at the moment is to open the Android app on my phone and remove the label.I'm guessing this is related specifically to our work environment - the firewall, proxy, ISA server, etc.  I have tried using Fiddler to see which specific HTTP requests are failing, but as soon as Fiddler is hooked in as a proxy all external web sites stop working.My question is, does anyone know what is special about these specific actions and why they might be failing inside my work firewall?Note - I don't believe this a bug in Trello as it works perfectly outside of work!
Why do some Trello actions consistently fail inside my work firewall?
trello;trello labels;firewall
Both of the actions you described use the DELETE HTTP verb. Is your proxy blocking non-GET/POST/PUT requests?Other things that use DELETE, for testing if this is in fact the root issue:Removing a member from a cardDeleting a cardRemoving a member from a boardRemoving a vote from a card (requires the voting powerup to be enabled)