Stone walls on minimap - Not show

[Vasekdvor]

Hi, i´ve been playing the newest version of Factorio (0.15.23) and i have problem with minimap, where the stone walls does'nt show, it's interesting that when i show minimap on full size it shows the walls correctly.
But in minimap, the walls that are horizontal are visible but the walls which is vertically positioned is not visible.

Switching the other icons on/off doesn't help.

I have addes the log file and save game in attachments.

If it has already been posted, then i am sorry for duplicate.

Let's see the screenshot.

Factorio_bug_walls.jpg (292.13 KiB) Viewed 1377 times

[TruePikachu]

Not a bug, the minimap doesn't show full detail (since there aren't enough pixels).

[Loewchen]

18806