4.0 was where it was at, it's what i styled everything after for years.

Yeah I actually really like how they did with the back button on the 2nd picure

Australis was the GOAT, the menu was very good, since then it's just a list of things.

I agree, I disabled them in about:config. I believe the variable is browser.nova.enabled.

I genuinely thought I had opened Chrome somehow the other day when this update came out for me. It's so dumb.

That's the linux spirit

buttons and menus are still rounded I wanted everything square for the colors that's just place holders later I will make it match my desktop theme, plus with my own CSS I can make everything use only one row which is save a lot of space

It does but I want true sharp corner

• try this:

#urlbar {
	background-color: var(--seco);
	background-image: none !important;
  border: 1px solid var(--line) !important;
  margin-bottom: 3px !important;
  margin-left: -3px !important;
  margin-right: -4px !important;
  height: 30px !important;
}

.urlbar-background {
	background-color: transparent !important;;
}

#identity-icon-box {
	display: none !important;
}

.button-background.labelled {
  border-radius: 0px !important;
}

#trust-icon-container, #QRCodeGeneratePageAction, #star-button-box, #picture-in-picture-button, #ssbPageAction, #urlbar-zoom-button, #reader-mode-button, #identity-permission-box  {
	border-radius: 0px !important;
}                                  

• url container:

                                   
:root {--urlbar-container-padding-block: none !important;
}

.urlbarView-background {
    background-color: transparent !important;
    margin: 10px !important;
    border: 0px !important;
}

.urlbarView {
    background-color: var(--seco) !important;
    margin: 10px !important;
    border: 1px solid var(--line) !important;
    border-radius: 0px !important;
}



.urlbarView-row[selected] {
  background-color: var(--accent) !important;
  border-radius: 0px !important;
  margin-left: 4px !important;
  margin-right: 3px !important;
}

.urlbarView-row:hover {
  background-color: var(--accent) !important;
  border-radius: 0px !important;
  margin-left: 4px !important;
  margin-right: 3px !important;
}

/*remove from history button*/
.urlbarView-button {
  background-color: transparent !important;
  fill: var(--text) !important;
  border-radius: 0px !important;
}

.urlbarView-button:hover {
  background-color: transparent !important;
}```

There actually is UX research behind the rounded corner phenomenon. They make people feel like the interface is easier to use, and that feeling actually leads to a feedback loop where people experience less stress, cognitive load, and genuinely have an easier time using the interface.