Another bump.... Hello Shopify? This is rather essential to Canadian retailers, and every other POS seemed to be able to do it just fine. Considering we knew the penny would disappear back in 2012, it is rather bizarre that this came as a surprise for you guys.... 7 years later!
Only workaround I can come up with is to not sell anything in less than 5¢ increments.
If selling by the metre, make the per metre price a whole or half dollar value ($1.00 or $1.50) and sell in 0.1m increments to ensure the register price keeps to the 5¢ increments.
Not necessarily ideal, but workable.