LOS points keep moving.

[DragonBetween]

My line of sight points keep moving. I think it happens when after loading the campaign I'm working on but I'm not positive. I have the LOS locked so its not me moving it on accident. I do have the LOS as its own object. I have found if I place my LOS exactly right on the grid then player tokens cant move onto the walls when they are positioned on the lines instead of in the center of the squares or that they can pass threw LOS walls that are not all the covering a square like for door ways.

Here it is after it moved
https://www.fantasygrounds.com/forums/images/attach/png.gif

This is is where I originally had my LOS placed. I hide the walls so it is easier to see where I placed the LOS on the grid.
https://www.fantasygrounds.com/forums/images/attach/png.gif

Here is the same wall just further up and not only does the LOS move but it resizes because I selected all of the LOS points as a group and moved them together.
https://www.fantasygrounds.com/forums/images/attach/png.gif

Here is both of the above images shown together.
https://www.fantasygrounds.com/forums/images/attach/png.gif

This is still on a DM open but it shows what a PC token is able to do when I Have the LOS points set just right. It also shows the map of the Barrowmaze Adventure I'm adding to FGU and I use the map as a template for placing the walls and doors and setting the grid. I plan on deleting that fuzzy map after I'm done, but all of the doors are located in the middle of two grid squares. So half way in to each grid square. I tested it when the LOS are set right on a second loading of FGU that has joined the first and the PC token can move threw either of the grid squares but it still blocks their vision. So having the LOS points move on me is supper frustrating and very counter productive because I have to go threw and reset them every time it happens. I have the grid set to 140 x 140 because that is the size of the wall tile images I'm using, that way I don't have to resize every one I set.
https://www.fantasygrounds.com/forums/images/attach/png.gif

[Zacchaeus]

Most likely since you have various layers and you also have layers in folders the LoS is being drawn across a number of layers and/or folders. It's difficult to say exactly. LoS is not currently working if it's in a folder I think. I think also the LoS should be the first file (I think) in the list so try moving it up to the top. Incidentally it would probably be easier if you just had a single line for your wall if you are not going to draw the LoS to the edge of the wall but rather in the middle off it; rather than a double line which is almost on top of one another.

[Kelrugem]

Most likely since you have various layers and you also have layers in folders the LoS is being drawn across a number of layers and/or folders. It's difficult to say exactly. LoS is not currently working if it's in a folder I think. I think also the LoS should be the first file (I think) in the list so try moving it up to the top. Incidentally it would probably be easier if you just had a single line for your wall if you are not going to draw the LoS to the edge of the wall but rather in the middle off it; rather than a double line which is almost on top of one another.

About whether it needs to be in the first layer: It is only important (bug-related) whether or not it is in a folder, the ordering itself is not important because the LoS lines are always drawn as if they would be at the top, so, there is no layering of the LoS information :) At least by design if I understood correctly; whether or not there are some other hidden bugs, I am not sure :D (I still couldn't play in FGU, hence, just theory-talk on my side :( :D)