scrollToColumn doesn't reject/resolve correctly

[schlundus]

Describe the bug
table.scrollToColumn doesn't reject/resolve correctly. then and catch aren't called.
table.scrollToRow works as intended

Tabulator Info
6.3

To Reproduce
Save any Table Instance in global var T (i did it with examples 6.3 Virtual Dom Vertical, with example_table_virtual)
After completion issue the following in console

T.scrollToColumn("name", "middle", false)
.then(function(){
    console.log('then');
})
.catch(function(error){
    console.log('catch');
});


T.scrollToColumn("nxame", "middle", false)
.then(function(){
    console.log('then');
})
.catch(function(error){
    console.log('catch');
});

which yields no then, no catch and a Pending Promise

compare it to

T.scrollToRow(23, "middle", false)
.then(function(){
    console.log('then');
})
.catch(function(error){
    console.log('catch');
});

T.scrollToRow(1223, "middle", false)
.then(function(){
    console.log('then');
})
.catch(function(error){
    console.log('catch');
});

which yields a then, a catch and a fulfilled Promise

Expected behavior
scrollToColumn should behave as scrollToRow