Making a change to an automation does not reflect automatically

Is there any explanation for why making changes to automations does not always reflect instantly in the table? I have one automation that builds a grid using data in a table and attaches it to a field within the same table (as a roundabout way of attaching this info to a pdf further down the line). When I need to troubleshoot/update this automation, It takes quite a while before I’m able to see the changes I’ve made in the grid I’m building. sometimes it will display as it did before I made the change, other times it will display as completely empty (the grid having headers but no data to display). Would really appreciate a way of ensuring that my change is in place immediately after clicking update automation, or at least a rough approximation of how long it normally takes to go into effect.