If you scroll the ingame console with shift-pgup/pgdown the view of the console is changed as long as the console is height. But if the toolbar overlaps the console you cannot read what is behind the toolbar. If you scroll up its gone, if you scroll down the toolbar overlaps it. So the scrolling in the console should be in small steps like 4-lines each step.
How to reproduce: open the console, type list_patches and set the toolbar to shown left. The first patch-setting you see is yapf.rail_shorter_platform_per_tile_penalty. Two settings are overlapped by the toolbar. If you scroll up with shift-pgup you will see the lastest patch-setting as yapf.rail_longer_platform_penalty. But there are 2 patch settings missing which are overlapped by the toolbar and you cannot see them until the console-history is changed by say-messages or whatever, but then the next 2 lines are overlapped by the toolbar.
Progman opened the ticket and wrote:
Reported version: trunk Operating system: All
This issue was imported from FlySpray: https://bugs.openttd.org/task/1189