Previously inside sharepoint 2010 & 2013 on-premises we were not able to show more than 5,000 items inside list views. for example if we filter the items based on their status (for example status = Open), and there are more than 5,000 items with Open status we will get an error.. but in sharepoint online using the modern UI, i can see that there is no more any restrictions, and inside modern UI we are able to search/filter lists view even if the result contain more than 5,000 items .. so is my assumption that modern UI no more have the 5,000 threshold issue? if the answer is yes, then is still any type of thresholds?
Thanks