**BUG**
Concise problem statement:
Steps to reproduce bug:
1. On zooming in or out the grid lines will disappear at certain magnifications.
2.
3.
Results: no grid
Expected results: visible grid
Browser: Chrome or IE
Can you tell us what version of EasyEDA you are running?
There used to be an issue with grid lines, wires and drawn lines being aliased out at certain zooms but since the V3.10.x upgrade it appears to have been fixed.
EasyEDA should automatically update itself but if you are stuck at an earlier version doing `CTRL+F5` should bring it up to date.
If all else fails then this will do it:
https://easyeda.com/forum/topic/Manually_clear_offline_application_cache_if_EasyEDA_editor_page_cannot_update_to_new_version-5GE0YWhDn
Please post back if the problem persists.
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