Submitted by matthiaskrgr
There are two screenshots attached to this ticket.


SC1 ):
1) plant a WP via mouse   \u2192 path from WP to mouse
2) press undo key \u2192 WP is deleted, you have a path from ex-WP-position to mouse

SC2 ):
1) click and plant WPa \u2192 path from WP to mouse
2) click and plant another WPb \u2192 both WPs (a and b) connected, path fromWPb to mouse
3) press undo key 3 times \u2192 WPb disappears, still path from WPb to mouse
4) click on WPa \u2192 path from position of WPb to WPa, however WPb doesn't exit anymore.
(optional:  5) save and reload the map \u2192 path from WPa to tile x=1 y=1, however no WP there)

I have absolutely no idea what this report is support to be about. Can you
elaborate? :)

Here without wrong encoding:

SC1 ):
1) plant a WP via mouse → path from WP to mouse
2) press undo key → WP is deleted, you have a path from ex-WP-position to mouse

SC2 ):
1) click and plant WPa → path from WP to mouse
2) click and plant another WPb → both WPs (a and b) connected, path fromWPb to mouse
3) press undo key 3 times → WPb disappears, still path from WPb to mouse
4) click on WPa → path from position of WPb to WPa, however WPb doesn't exit
anymore.
(optional: 5) save and reload the map → path from WPa to tile x=1 y=1, however
no WP there)

The report describes how you reproduce the situations shown on the screenshot.

I think that the screenshots show things that are actually not supposed to happen.

I understand better now. This is definitely a bug.

Could not reproduce - and given seven years already went by, marking as resolved.
If this is equivocated and the bug is still reproduce-able -- by all means
reopen this ticket.