Affected products: MapInfo Pro 2019
When opening a .xlsx file in MapInfo Pro 2019, the numeric columns are formatted as Character and not as Integer or Float as expected.
This is a known bug already referenced under MIPRO-114556.
ResolutionUPDATED: March 16, 2020
This bug is planned to be fixed in MapInfo Pro 2019.1 release, scheduled for early April 2020.