Support for tone() on ATTiny841 - documentation issue or misunderstanding?

[Simulators]

I am using the ATtiny841 and ATTiny core 1.5.2, and I am confused about tone() support.

The README says "on 841/441, in version 1.1.6 and later, tone() is on Timer2", and ATtiny_x41.md says "The standard Tone() function is supported on these parts. For best results, use PA5 (pin 5 on either pinout) or PA6 (pin 4 on counterclockwise, pin 6 on clockwise), as this will use hardware output compare to generate the square wave, instead of interrupts."

I'm having some trouble navigating the code, but I would have expected that the direct drive pins for Timer2 would be OC2A & OC2B. However the accompanying pinout diagram for the '841 shows PA5/PA6 as OC0B & OC1A respectively. OC2A/OC2B would be PB7 & PA7.

Before I commit something to copper, is the documentation correct, or is there an error? Regardless of whether I use PA5/PA6, or PB7/PA7, for tone(), I see lots of interrupts being generated when tone() is active.

I realise that 1.5.2 is the older core, and 2.0.0 is the development focus, but the 2.0.0 documentation says the same.

(ETA: tone() does actually work, whatever pins I use.)

Thanks!