This is very important bug that already here for more than 1 years (at least what i know) and that need to be resolved asap but somehow the developer dont solve it, this bug make website can detect the bot
I have tried what the OP has tried, list functions such as get index and list contains aren't working as expected, it doesn't let you search the whole database for a string(it returns false / no result) nor select records by criteria.
Use the filter in the "Select Records By Criteria" action
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