If you update to Joomla 3.8.10, please make sure that you either do a full GitHub update of Fabrik, or disable caching for your lists (in the Advanced settings) or turn off Joomla's System Cache setting. A change in Joomla's cache code in 3.8.10 required a fix in Fabrik, which will be rolled in to the next release, but is currently only available in GitHub.
Handy Hints and Tips
This main heading is intended to be a top-level topic under which we can create various sub-wikis with miscellaneous hints and tips which really don't fit anywhere else.
So, if you have a handy hint or a handy tip, please add it to a sub-wiki or create a new sub-wiki if there isn't an appropriate one already existing.