I'm trying to export some vector art made by composing Ovals. When I exported my art first time everything had gone fine. After few changes in other Layers in my file (the picture shown is a part of the bigger scene) I tried to export again and had got the following picture. Notice the glitchy cut brush bundles at the left bottom and top.
I guessed first that this SVG file is somehow broken and that it is just a rendering issue of Chrome. After digging into SVG code using Chrome dev tools I find out that the combined shapes are exported as SVG paths. It looks like Sketch processes combined layers and generate path (form) improperly.
How could I deal with this issue and export SVG properly or revert back my changes in the file?