<div class="col">
				<div class="modal fade" id="cangWeiSelectMouldUpdate" tabindex="-1" aria-hidden="true">
					<div class="modal-dialog modal-dialog-scrollable">
						<div class="modal-content">
							<div class="modal-header">
								<h6 class="modal-title">根据仓位选模具</h6>
								<small style="font-weight:800; color: darkred;" class="cangWeiSelectMouldUpdate"></small>
								<span data-bs-dismiss="modal">关闭</span>
							</div>
							<div class="modal-body" >
							     仓位信息： <h4 id="cangweiTitle"></h4>
<!-- 							   <hr>
							   <select class="multiple-select selectcs" data-placeholder="Choose anything" multiple="multiple">
 								</select>
 --> 								 <hr>
	 								  <div class="mb-3">
											<label class="form-label">Select2 Input Group Apend</label>
											<div class="input-group">
												<select class="single-select form-select" id="selectMouldList">
													
												</select>
												<button class="btn btn-outline-secondary" type="button"><i class='bx bx-search'></i>
												</button>
											</div>
										</div>
 							</div>
							<div class="modal-footer">
 								<button type="button" class="btn btn-success" data-bs-dismiss="modal" onclick="UpdateMouldCang()">确定</button>
 								<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
							</div>
						</div>
					</div>
				</div>
			</div>

通过网上查阅资料 得知 是因为 弹窗modal导致的， 后面修改

最终效果