Buffered graphics paging issues.

[mbaraa]

• Version of ssd1306 in use (if applicable): 0.8.4
• MCU/other hardware in use: RP2040 (Raspberry Pi Pico W)
• Display resolution and interface: I2C, 128x64

Description of the problem/feature request/other

Paging is not working properly (actually not working at all) in buffered graphics, where it only draws on the same line over and over.

I tried changing the addressing mode with

display.set_addr_mode(AddrMode::Horizontal).unwrap();

And had no luck with it, so here I am.

However text mode works perfectly, with rotation, brightness, etc... it's just the buffered graphics that's not working, I'm not sure if it's from the HAL I'm using for the pico, but I have tried several displays and picos, same results.

Here's a picture of how the display looks with the text i2c code