[Slickgrid v3] Cannot select multiple cells in a table by dragging in Firefox

[shsatovg]

Environment Information

• OS:Windows 10 Pro 21H2
• Browser:Firefox 102.5.0esr
• Library:SlickGrid v3.0.0

Overview

• Cannot select multiple cells in a table by dragging in Firefox. Multiple cells can be selected in Chrome and Edge without problems.

Details

• When I try to select multiple cells in a table by dragging in Firefox, a line around the cells is displayed while dragging. However, after releasing the drag, only one cell at the starting point is selected.

Reproduction Steps

• 1. open the official sample (http://6pac.github.io/SlickGrid/examples/example-draggable-grouping.html) in Firefox
• 2. Drag any multiple cells.
• 3. Release the drag.

Which version of Slickgrid has this problem?

• This problem occurs in Slickgrid v3.0.0 and later.
  • It does not occur in Slickgrid v2 (v2.4.42, v2.4.44).
  • It also occurs with the latest Slickgrid 3.0.2.