With all due respect, this was never odd. It was immediately predicted from the day the UK voted for Brexit, along with many of the other very obvious side effects of leaving the EU, like free movement & ability to work, logistical challenges etc.
When Brits go to another Country, they are expats, bringing their wealth and culture with them. When people come to the UK they are immigrants or economic migrants refusing to get jobs, learn the language or integrate while taking all the jobs.
It was predicted long before the vote. The government even posted leaflets in everyone's door explaining that.