Simple, because we haven't taken back control. May tried to keep us in the EU by stealth and produced her 'solution' to show that she'd obtain our independence. Boris took over and produced his infamous 'oven ready deal' which was based on May's solution. This achieved only BRINO and we are still tied to both the EU in many ways (including regarding Northern Ireland and our fishing areas) and also the ECHR. The only way that Boris could manage to extract us from the EU's control was to agree to continue to pay them for 'ongoing expenses' and also that we would not benefit in any way for all the work we had done on earlier projects, including Galileo.
There is also the continuing problem of illegal immigration across the Channel. While this is due to the government doing nothing other than making the effort to pick them up mid-Channel and bring them here, it is also the fault of the French for allowing (and no doubt encouraging) them to set sail from their coastline and turning a blind eye to the trafficking operations on their land.
Admittedly, both problems are mainly our own (or rather our government's) fault, the French are doing their best to make us pay for leaving their control.