In SimpleMDE check if trigger exists before call (#9545)
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		|  | @ -1490,7 +1490,9 @@ function setCommentSimpleMDE($editArea) { | ||||||
|       } |       } | ||||||
|     }, |     }, | ||||||
|     Backspace: (cm) => { |     Backspace: (cm) => { | ||||||
|       cm.getInputField().trigger('input'); |       if (cm.getInputField().trigger) { | ||||||
|  |         cm.getInputField().trigger('input'); | ||||||
|  |       } | ||||||
|       cm.execCommand('delCharBefore'); |       cm.execCommand('delCharBefore'); | ||||||
|     } |     } | ||||||
|   }); |   }); | ||||||
|  |  | ||||||
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