Checkhealth

health#compe#check
========================================================================
## compe:snippet
  - INFO: snippet engine is not detected.

## compe:mapping
  - INFO: `compe#complete` is not mapped
  - INFO: `compe#confirm` is not mapped
  - INFO: `compe#close` is not mapped
  - INFO: `compe#scroll` is not mapped

Describe the bug

When using a gui with multigrid enabled, windows are positioned relative to the entire editor rather than the current window leading to overlapping windows.

To Reproduce

1. Use a multigrid enabled gui such as fvim or neovide
2. Open two windows with a buffer that can show the documentation window
3. Notice that when the documentation is open on the left window, the positioning is fine because that window has no offset.
4. Notice that when the documentation is open on the right window, it is positioned as though the cursor were actually on the left window because it ignores the position of the window

Screenshots (optional)

Additional context (optional)

It is possible that this is actually an issue with the multigrid implementations of fvim and neovide, but I noticed that the floating window position received by the gui is relative to the editor and not a given window, so I think it has to be an issue with how the window is constructed.