fix placeholder

client/src/Components/inputs/forms/FormMultiSelectField.tsx

@@ -105,7 +105,7 @@ export const FormMultiSelectField = <T extends FieldValues, O extends MultiSelec
 								field.onChange([...newValue.map((o) => o.id), ...unresolved]);
 							}}
 							fieldLabel={fieldLabel}
-							placeholder={placeholder}
+							placeholder={selected.length > 0 ? "" : placeholder}
 							renderOptionContent={renderOptionContent}
 							error={!!fieldState.error}
 							helperText={fieldState.error?.message ?? ""}

client/src/Pages/Maintenance/create/index.tsx

@@ -199,6 +199,9 @@ const CreateMaintenanceWindowPage = () => {
 							fieldLabel={t(
 								"pages.maintenanceWindow.form.startTime.monitors.option.addMonitors.label"
 							)}
+							placeholder={t(
+								"pages.maintenanceWindow.form.startTime.monitors.option.addMonitors.label"
+							)}
 							options={monitors ?? []}
 						/>
 					}