[BUG] Cells will flash when updating values

[decaf-dev]

Describe the bug
When editing a cell, if you type and save the data (whether by clicking outside or by pressing enter) the cell will sometimes flash.

To Reproduce

1. Click on a cell
2. Type data (happens a lot on deleting data)
3. Press enter

Expected behavior
No flashing

Using Mobile App?
No

Additional Information
It's flashing because the cell menu closes before it can update, so it briefly shows the old text and then shows the new text. It only happens periodically because it's some what asynchronous.

[decaf-dev]

Flashing also occurs when opening menus now. This is because the ref won't be set until the menu updates. This can be fixed by only opening the menu after the menu position has updated