Hi @Denis_MLoan Thanks for sharing your workaround! This sounds similar to an issue that Paulo details here, but I see that you do have a Primary key set in the sample app json: 'Default Row' property does not work in table component - #9 by Paulo
I see that our team is investigating race conditions where the default row selection isn't being set properly. Ideally, you should only have to set it on the table config. I will add your example. I'll follow up here if I get any updates internally