Problem Description:

Hiding all columns causes non-stopping AU.

Reproducing Steps:

1. select left upmost button to select all cells, above row 1
2. right click a column, select "hide columns"

Expected:
all columns are hidden and we can unhide them.

Actual:

AU are sent continuously, non-stopping.
We have no way to unhide those hidden columns.

Sent AU are like as follows:

dtid:z_9up
cmd_0:onZSSCellFetch
uuid_0:bNHP0
data_0:

{"token":"217","sheetId":"0","type":"jump","direction":"east","dpWidth":0,"dpHeight":5025,"viewWidth":1636,"viewHeight":470,"blockLeft":0,"blockTop":0,"blockRight":29,"blockBottom":20,"fetchLeft":30,"fetchTop":0,"fetchWidth":-1,"fetchHeight":-1,"rangeLeft":30,"rangeTop":0,"rangeRight":29,"rangeBottom":9,"arLeft":0,"arTop":0,"arRight":29,"arBottom":172,"arFetchTopHeight":-1,"arFetchBtmHeight":153}

cmd_1:onZSSCellFetch
uuid_1:bNHP0
data_1:

{"token":"218","sheetId":"0","type":"jump","direction":"east","dpWidth":0,"dpHeight":5025,"viewWidth":1636,"viewHeight":470,"blockLeft":0,"blockTop":0,"blockRight":29,"blockBottom":20,"fetchLeft":30,"fetchTop":0,"fetchWidth":-1,"fetchHeight":-1,"rangeLeft":30,"rangeTop":0,"rangeRight":29,"rangeBottom":9,"arLeft":0,"arTop":0,"arRight":29,"arBottom":172,"arFetchTopHeight":-1,"arFetchBtmHeight":153}