Description:
In Calc, when editing a cell using the formula bar, the cursor in the sheet (thick rectangle border indicating current cell) completely disappears.  This can sometimes make it a bit difficult to figure out which cell is being edited.  

Steps to reproduce:
* New spreadsheet
* Select a cell
* Click in the formula bar to edit current cell

Expected:
I would expect to be able to edit the selected cell and still have a strong visual indication of which cell we are modifying.  If not the standard cell border cursor, I would expect some other prominent visual cue.

Actual:
Our cursor is now gone.  Aside from row/column headings being highlighted, we have a completely blank document with no indication of which cell we're modifying.

Notes:
This is quite trivial and I'm still not completely convinced that it's valid, but struck me as a decent enhancement request.  It also becomes less of an issue when one has a sheet that is full of data.  It is also quite easy to work around by either looking at the row/column headings or typing something in a cell and watching for motion.

The cursor around the cell also disappears when editing the cell directly (f2 or double clicking a cell), but this behavior somehow seems more intended.

Again, sorry if this is rather piddly, but I figure I'll at least attempt to report it!