Revert "[FIX] web: empty kanban view on mobile"

Original commit breaking kanban view: 4cd379cf6ecffa00e0085a9833228128b484d48a
Commit reverted: 287136b85e55b4abca03122c7b1c59099abd0854

Two fixes were added independently to fix this bug but only one is needed.

odoo/enterprise@c8fe86fa225d3a5967e629f8fd35e1c92aa1fa61 best fix
287136b85e55b4abca03122c7b1c59099abd0854 other fix (now reverted)

Reverting this commit fix the following bugs:
- Swipe on kanban : Not able to swipe on empty column. it only works on cards
- Popup activity on kanban card is unusable
- On kanban separation, "Undefined" cards are before the kanban separation

closes odoo/odoo#30177

2 files changed, 1 insertions, 5 deletions

diff --git a/addons/web/static/src/js/views/kanban/kanban_renderer_mobile.js b/addons/web/static/src/js/views/kanban/kanban_renderer_mobile.js
index b7f2dd62b28..8619448e793 100644
--- a/addons/web/static/src/js/views/kanban/kanban_renderer_mobile.js
+++ b/addons/web/static/src/js/views/kanban/kanban_renderer_mobile.js
@@ -143,7 +143,7 @@ KanbanRenderer.include({
             onSuccess: function () {
                 // update the columns and tabs positions (optionally with an animation)
                 var updateFunc = animate ? 'animate' : 'css';
-                self.$('.o_kanban_mobile_tab, .o_kanban_group').removeClass('o_current');
+                self.$('.o_kanban_mobile_tab').removeClass('o_current');
                 _.each(self.widgets, function (column, index) {
                     var columnID = column.id || column.db_id;
                     var $column = self.$('.o_kanban_group[data-id="' + columnID + '"]');
@@ -157,7 +157,6 @@ KanbanRenderer.include({
                     } else if (index === moveToIndex) {
                         $column[updateFunc]({left: '0%'});
                         $tab[updateFunc]({left: '50%'});
-                        $column.addClass('o_current');
                         $tab.addClass('o_current');
                     } else if (index < moveToIndex) {
                         $column.css({left: '-100%'});
diff --git a/addons/web/static/src/scss/kanban_view_mobile.scss b/addons/web/static/src/scss/kanban_view_mobile.scss
index 1c5a9eab531..b74ae8aaea5 100644
--- a/addons/web/static/src/scss/kanban_view_mobile.scss
+++ b/addons/web/static/src/scss/kanban_view_mobile.scss
@@ -36,9 +36,6 @@
             margin-left: 0; // override the margin-left: -1px of the desktop mode
             border: none;
 
-            &.o_current {
-                position: initial;
-            }
             .o_kanban_header {
                 display: none;
             }