There is a bug shwon in the qrig during the inline editing when collapse and fold the sub-grids but there is no pattern to this error and that make me loose the data during editing.

The bug that grid html code appears inside the grid like that

<div id="list2_3_t_1" class="tablediv"><div class="ui-jqgrid ui-widget ui-widget-content ui-corner-all" id="gbox_list2_3_t_1_t2" dir="rtl" style="width: 866px; "><div class="ui-widget-overlay jqgrid-overlay" id="lui_list2_3_t_1_t2"></div><div class="loading ui-state-default ui-state-active" id="load_list2_3_t_1_t2" style="display: none; ">Loading...</div><div class="ui-jqgrid-view" id="gview_list2_3_t_1_t2" style="width: 866px; "><span style="width:0px;height:0px;background-color:black;" tabindex="0"><span tabindex="-1" style="width:0px;height:0px;background-color:grey" id="list2_3_t_1_t2_kn"></span></span><div class="ui-jqgrid-titlebar ui-widget-header ui-corner-top ui-helper-clearfix" style="display: none; "><a role="link" href="javascript:void(0)" class="ui-jqgrid-titlebar-close HeaderButton" style="left: 0px; "><span class="ui-icon ui-icon-circle-triangle-n"></span></a><span class="ui-jqgrid-title-rtl"></span></div><div style="width: 866px; " class="ui-state-default ui-jqgrid-hdiv"><div class="ui-jqgrid-hbox-rtl"><table class="ui-jqgrid-htable" style="width:866px" role="grid" aria-labelledby="gbox_list2_3_t_1_t2" cellspacing="0" cellpadding="0" border="0"><thead><tr class="ui-jqgrid-labels" role="rowheader"><th id="list2_3_t_1_t2_subgrid" role="columnheader" class="ui-state-default ui-th-column ui-th-rtl" style="width: 25px; "><div id="jqgh_list2_3_t_1_t2_subgrid"><span class="s-ico" style="display:none"><span sort="asc" class="ui-grid-ico-sort ui-icon-asc ui-state-disabled ui-icon ui-icon-triangle-1-n ui-sort-rtl"></span><span sort="desc" class="ui-grid-ico-sort ui-icon-desc ui-state-disabled ui-icon ui-icon-triangle-1-s ui-sort-rtl"></span></span></div></th><th id="list2_3_t_1_t2_Name" role="columnheader" class="ui-state-default ui-th-column ui-th-rtl" style="width: 263px; "><span class="ui-jqgrid-resize ui-jqgrid-resize-rtl" style="cursor: col-resize; ">&nbsp;</span><div id="jqgh_list2_3_t_1_t2_Name" class="ui-jqgrid-sortable">اسم المعامل<span class="s-ico" style="display:none"><span sort="asc" class="ui-grid-ico-sort ui-icon-asc ui-state-disabled ui-icon ui-icon-triangle-1-n ui-sort-rtl"></span><span sort="desc" class="ui-grid-ico-sort ui-icon-desc ui-state-disabled ui-icon ui-icon-triangle-1-s ui-sort-rtl"></span></span></div></th><th id="list2_3_t_1_t2_Value" role="columnheader" class="ui-state-default ui-th-column ui-th-rtl" style="width: 315px; "><span class="ui-jqgrid-resize ui-jqgrid-resize-rtl" style="cursor: col-resize; ">&nbsp;</span><div id="jqgh_list2_3_t_1_t2_Value" class="ui-jqgrid-sortable">القيم<span class="s-ico" style="display:none"><span sort="asc" class="ui-grid-ico-sort ui-icon-asc ui-state-disabled ui-icon ui-icon-triangle-1-n ui-sort-rtl"></span><span sort="desc" class="ui-grid-ico-sort ui-icon-desc ui-state-disabled ui-icon ui-icon-triangle-1-s ui-sort-rtl"></span></span></div></th><th id="list2_3_t_1_t2_WrongFeedback" role="columnheader" class="ui-state-default ui-th-column ui-th-rtl" style="width: 263px; "><span class="ui-jqgrid-resize ui-jqgrid-resize-rtl" style="cursor: col-resize; ">&nbsp;</span><div id="jqgh_list2_3_t_1_t2_WrongFeedback" class="ui-jqgrid-sortable">رسالة القيمة الخاطئة<span class="s-ico" style="display:none"><span sort="asc" class="ui-grid-ico-sort ui-icon-asc ui-state-disabled ui-icon ui-icon-triangle-1-n ui-sort-rtl"></span><span sort="desc" class="ui-grid-ico-sort ui-icon-desc ui-state-disabled ui-icon ui-icon-triangle-1-s ui-sort-rtl"></span></span></div></th></tr></thead></table></div></div><div class="ui-jqgrid-bdiv" style="height: auto; width: 866px; "><div style="position:relative;"><div></div><table id="list2_3_t_1_t2" class="  ui-jqgrid-btable" tabindex="1" cellspacing="0" cellpadding="0" border="0" role="grid" aria-multiselectable="false" aria-labelledby="gbox_list2_3_t_1_t2" style="width: 866px; "><tbody><tr class="jqgfirstrow" role="row" style="height:auto"><td role="gridcell" style="height:0px;width:25px;"></td><td role="gridcell" style="height:0px;width:263px;"></td><td role="gridcell" style="height:0px;width:315px;"></td><td role="gridcell" style="height:0px;width:263px;"></td></tr><tr id="1" tabindex="-1" role="row" class="ui-widget-content jqgrow ui-row-rtl"><td role="grid" aria-describedby="list2_3_t_1_t2_subgrid" class="ui-sgcollapsed sgcollapsed" style=""><a href="javascript:void(0);"><span class="ui-icon ui-icon-triangle-1-e"></span></a></td><td role="gridcell" style="" title="بسط الناتج" aria-describedby="list2_3_t_1_t2_Name" class=" " tabindex="-1">بسط الناتج</td><td role="gridcell" style="" title="" aria-describedby="list2_3_t_1_t2_Value">&nbsp;</td><td role="gridcell" style="" title="تأكد من الجمع بشكل صحيح" aria-describedby="list2_3_t_1_t2_WrongFeedback">تأكد من الجمع بشكل صحيح</td></tr><tr id="2" tabindex="-1" role="row" class="ui-widget-content jqgrow ui-row-rtl selected-row ui-state-hover"><td role="grid" aria-describedby="list2_3_t_1_t2_subgrid" class="ui-sgcollapsed sgcollapsed" style=""><a href="javascript:void(0);"><span class="ui-icon ui-icon-triangle-1-e"></span></a></td><td role="gridcell" style="" title="مقام الناتج" aria-describedby="list2_3_t_1_t2_Name" class="edit-cell ui-state-highlight" tabindex="0"><input type="text" size="50" maxlength="50" id="2_Name" name="Name" role="textbox"></td><td role="gridcell" style="" title="" aria-describedby="list2_3_t_1_t2_Value">&nbsp;</td><td role="gridcell" style="" title="تأكد من توحيد المقام بشكل صحيح" aria-describedby="list2_3_t_1_t2_WrongFeedback">تأكد من توحيد المقام بشكل صحيح</td></tr></tbody></table></div></div></div><div class="ui-jqgrid-resize-mark" id="rs_mlist2_3_t_1_t2">&nbsp;</div></div><div id="p2_list2_3_t_1_t2" class="scroll"></div></div>

waiting 4 u reply ASAP......

Thanks in advance