Slitherine

By adjusting both global and per-city tax it is possible to set taxes up to 150%.

This is not new with 1.1.4.
It's same for 1.1.2.

It's a side effect of having both global and city tax rates.

Yes, but still a bug, right?

It is not an error, we were aware of it when we implemented it.

If you know of a solution that doesn't have a side-effect I'd love to hear of it!

Suppress the global tax slider?

Have actual rate be min(100%, max(0%,A+B-50%)), where A and B are rates on the sliders.

I'm not really sure how it works currently but I assumed it was City Rate * Global Rate, which should give a 0-100% range, right? That seems to me to be the most intuitive but I guess it must have a side effect! Edit: Ok so that's clearly not how it works... I've just never touched the global rate so never noticed.

If it has to be an addition then I'd probably back player1's suggestion of just capping it at 100%

Edit: Just had a look - the min is already set at 0% so capping the max at 100% should be the simplest fix, right?

As already suggested just hard cap it so it can't above 100%. It does hard cap at 0% rather than -50% so surely 100% rather than 150% is also possible?

Sounds reasonable!