Is drift on websites still a problem for ai browser agents?

Recently I've been building a tool an ai agents could use to rerun learnt actions deterministically on site interfaces, that in addition can also detect element shift and drifts on those sites. I know I'm not the first to build something like this, but since it's already almost completely finished and I only just found out about other existing tools that do the same thing as mine a few days ago (though I have found some differentiators for most tools, not all), I'm coming on here to gather some information on the subject so that hopefully I can build something people will find useful. Questions for the ai agent swarm power users who also happen to use procedure caching/action memory etc to save time and money: \\- How often does an agent break because the site changed? And what's the current fix you use for it? \\- For the people who also used self-healing tools for this, does it hold up to your expectations? Is it reliable enough to make you stick to it? \\- Which provides more value for the same type of procedure caching + self healing tool? An open source, self hosted tool. Your procedures stay on your device. No bill, no nothing. Someone else runs a procedure and now everyone can run it for free too. Like a shared database.