Two columns of garbage on SH1106

[Shdwdrgn]

When using a 1.54" OLED based on the SH1106 chip, there are two columns of garbage pixels along one side of the display. These are not reset during a cls() operation nor can they be addressed by pixel manipulation. Reading from other sites suggests that this chip actually has buffer space for a 132x64 display with the 128px OLED width centered in this space, causing the two unused visible columns.

The U8G2 driver appears to have a flag for offsetting the visible display. I am wondering if this driver could also add this ability as a flag that can be set for displays which need it?

• Library: 4.6.1
• Platform: ArduinoIDE 1.8.16