javascript - After updating single element, updated element shows twice in my UI, spot it came from and spot it was dragged to -


i have main screen of app, there many different sections. user can drag element section section.

the problem i'm having once user drags , drops element new section (which hits server updated info), element showing twice, once in place came from , once in place dragged to.

upon refreshing app, shows in place dragged to, correct.

i think issue lies somewhere in recieveelement reducer, hit after update server.

would love in debugging this. thanks!

   case 'receiveelement':         const elementid = `${action.element.id}`;          // don't add, duplicate         const newstate = {...state}; // copy old state         delete newstate[elementid]; // delete item object          const newvisibleelementids = newstate.visibleelements.filter(id => id !== elementid); // remove item visible elements         const newunplacedelementids = newstate.unplacedelements.filter(id => id !== elementid);          return {             ...newstate,             elementsmap: {                 ...newstate.elementsmap,                 [elementid]: action.element,             },             visibleelements: [...newvisibleelementids, elementid],             unplacedelements: [...newunplacedelementids],         };

in skyelement react object, have following, hits server before reducer hit

enddrag(props, monitor) {         if (monitor.diddrop()) {             const result = monitor.getdropresult();         if (result.sectorid) {             const obj = { id: props.id, sectorid: result.sectorid, slotid: result.slotid };              props.dispatch(requestupdateelement(obj));         }     } },


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