All of these bugs are already documented in the bug report forum. If the devs don't have the time/money/people to address these bugs, I have little hope that even a popular bugfix mod will change this, it won't magically remove the reason why these bugs haven't been fixed yet.
This doesn't help with the general mood in the forums either (this thread being an example), it's an open secret that "less important" issues are neglected. We only get annual updates with 2-3 hotfixes each that contain a few fixes, but many issues remain.
It's not entitled to expect a certain amount of quality and maintenance of a product that you paid for, but I've yet to find a game that can match HoI4's number of bugs, oversights and balance issues, many of which don't require a deep understanding of the game or the code to fix.
And I'm not trying to hate on the devs here, from what I've seen on the forums they are genuinely trying their best, but there's a limit to what a single person can do.
Regarding this, when did that happen the last time? I haven't heard of it yet, but I've only started playing HoI4 between WtT and MtG. And while fixing a single bug will be quick, finding and fixing all of the small bugs will be quite a task for a single person that isn't getting paid for it.
Also, when it comes to balance issues or badly designed mechanics, it's a subjective matter what would be the best fix. E.g. changing the Netherlands' trade influence mini-game to actually work in historical games, or making their non-aligned path work in non-historical games, would that be a bugfix or a mod? Or the AI failing to build a proper fleet due to wonky ship building priorities, there's not a clear balance solution. We would need an official fix for this.
