Excel selects wrong cell

In the last couple of days, disabling the touchpad is possibly eradicating the issue. If this is correct, it doesn't solve my problem, as I use a trackball mouse in conjunction with the laptop touchpad, for accessibility/convenience reasons. However, it might mean that temporarily unplugging my mouse and using only the touchpad, for certain Excel files, is a workaround of sorts.

I'm not sure if this will be the case for other users. I'm also not sure if any specific touchpad setting might be correlated; I will test further.

I've already had my laptop drivers updated many times, so I don't think that's a cure.

If the above has merit, I'm unsure yet whether the issue only manifests after both touchpad and mouse have been used while in a worksheet.