ES filters on tables breaks Warp10 annotations queries

[ldec]

When using a Warp10 datasource for annotations, creating filters in ES tables breaks the Warp10 query.

Warp10 annotation:

[ $token 'mySerie' { } $end $interval ] FETCH 

When creating a filter in the dashboard (here a table using an ES datasource):

The following JS error happens every time the dashboard is refreshed (and the annotation is not shown anymore):

AnnotationSrv.query error TypeError: "myVar.current is undefined"
    computeGrafanaContext https://GRAFANA_URL/public/plugins/grafana-warp10-datasource/warp10-datasource.js:254
    annotationQuery https://GRAFANA_URL/public/plugins/grafana-warp10-datasource/warp10-datasource.js:134
    s https://GRAFANA_URL/public/build/app.469095018b321ef1da7c.js:22
    c https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    c https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    $digest https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    $apply https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    l https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    h https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
    n https://GRAFANA_URL/public/build/vendor.469095018b321ef1da7c.js:130
app.469095018b321ef1da7c.js:22:827595

There is no "exec" call made after in the browser Network inspector.

The error still happens after removing the filter from the dashboard with the following action:

and will only stop once the "Filters" variables (as shown bellow) is removed.