In Chrome v65 (desktop), scrolling a page works okay, like this one, but the scrolling might have some minor issues.

• I move a scroll wheel up or down to move one of the board columns, but I can't do the same for the main Workboard page. Indeed, the main vertical scrollbar (at the far exist) either is disabled or may not exist there.
• Nonetheless, I click the wheel on either one of the task boxes or one of grey areas of any column, and I scroll the main Workboard page by moving the (mouse) cursor anywhere.
• I tried clicking the wheel on the grey left panel and the open white area, but it won't work there.
• When I click the wheel on one of the columns, and I move up or down to vertically scroll the column/board, I just vertically scroll the column
  • If I do the above, I can't horizontally move anywhere the page or the column. However, the one I'm describing below is more of an issue than this one feels like a "non-issue".
  • When I either click the wheel again (or, if you are using the latest version of Chrome, move the cursor out of the browser) to revert back to the normal cursor, the Workboard page would stay as is.
    • For example, if I scroll the page down, and I click the wheel to change the cursor back, the page stays down, and the top of the Workboard content can't be partially seen (i.e. seems to be obstructed, or something like that)
    • To move the Workboard page back up or down, I must re-click the wheel on either a column or a column header. As described before, neither the main vertical scrollbar is enabled/existent nor clicking the wheel on the white area is possible.
• However, a Workboard page has no issues when I scroll the page horizontally in any way, like holding the main mouse button on the horizontal scrollbar or using the scroll wheel. (This contrasts with scrolling the page at IE11, which is described at T190597.)

EDIT: I downloaded Opera 52 (the latest version), scrolled Workboard pages, and found that they experience the same thing that Chrome experiences.