withBackground causes outlook to lose border on button

[ticklemepierce]

• Operating System (or Browser): Outlook Office 365
• Node Version: 22.11.0
• Link to reproduction: https://stackblitz.com/edit/jsx-email-repro-yye9bxwq?file=templates%2FReproduction.tsx

Expected Behavior

• Button still has border but I think it should lose the border radius

Actual Behavior

• Button has no border

[shellscape]

@ticklemepierce any chance you're using minify: true on this? Was just reported that minifying messes up the outlook mso stuff.

[ticklemepierce]

export const config = defineConfig({
  render: { minify: false },
  plugins: [scssInjectionPlugin, inlinePlugin],
});

assuming the config is working correctly we are not but I'm off of work until 2025 so don't want to dig in too much until then :P