exception in Grid.prototype.preCompileCellTemplates

[yurigenin]

When I load column definitions asynchronously but a couple of columns already exists (like selection header and another fixed column) sometimes I get an exception in the Grid.prototype.preCompileCellTemplates on this line:
var html = col.cellTemplate.replace(uiGridConstants.MODEL_COL_FIELD, self.getQualifiedColField(col));

The cellTemplate property does not exist but cellTemplatePromise property is there. It looks like the cell template is still being downloaded and Grid.prototype.preCompileCellTemplates is called prematurely.
Unfortunately I cannot create a plunker but you probably should know what is going on?