Doesn't format as table with single (1) field_collections.

I would like to point out that the fact of having a single record for a given field_collection, once possible and accepted by the modules configuration, it is completely regular. There is no reason why field_collection table could not work accordingly in this situation.

That's why in my point of view, this is a minor bug instead of a desirable feature.

Is there a fix for this?

Herewith a quick and dirty fix:

Open 'theme.inc' inside the Field Collection Table module.
Find the following function: theme_field_collection_table_multiple_value_fields

In this function #cardinality (line 42 in 7.x-1.0-beta1 version) value needs to be changed from >1 to >0.

Before:
if (isset($element['#cardinality']) && ($element['#cardinality'] > 1 || $element['#cardinality'] == FIELD_CARDINALITY_UNLIMITED)) {

After:
if (isset($element['#cardinality']) && ($element['#cardinality'] > 0 || $element['#cardinality'] == FIELD_CARDINALITY_UNLIMITED)) {

*edit: For some reason an empty TH and TD are generated when applying this change.
have not been able to figure out why...

I think we can remove this check for cardinality.
If I choose table widget and set number of values to 1 I still expect this to be rendered as a table, otherwise I can change the widget.

I'm also sharing this patch, it's re-rolled #4 to apply nicely with #1438266-23 which we also use in our make file.