Originally by otroeung
A problem with the horizontal scrollbar occurs sporadically when changing the number of columns displayed in a grid. To reproduce the problem: 1. include a grid with multiple columns; the content width should be bigger than the grid width (an horizontal scrollbar should be displayed). 2. reduce the number of displayed columns; the content width is now smaller than the grid width. 3. display more columns again (like in 1.) and a horizontal scrollbar should be displayed. But when trying to scroll, the scrollbar disappears and the content can not be scrolled. 4. repeat previous steps until the bug occurs 5. a look at the placeholder for the scrollbar in the dev tools from chrome shows that the placeholder width has the wrong size. the problem does not always occur but by changing the number of columns displayed often enough the problem should occur.
Imported from https://dev.vaadin.com/ issue #20254
该提问来源于开源项目：vaadin/framework
