Java 片段之间的转换动画在重新打开片段后发生

我正在使用BottomNavigationBar并将片段与此一起切换。但是，只有在第二次显示相同片段后，动画才会开始工作。如果您不明白，请观看以下视频：

onCreate（）：

切换片段时：

 public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                    fm = getSupportFragmentManager().beginTransaction();
                    fm.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                    switch (item.getItemId()) {
                        case R.id.main_room:
                            if (active != earn) {
                                fm.hide(active).show(earn);
                                active = earn;
                            }
                            break;
                        case R.id.refs_room:
                            if (active != refs) {
                                fm.hide(active).show(refs);
                                active = refs;
                            }
                            break;
                        case R.id.events_room:
                            if (active != events) {
                               fm.hide(active).show(events);
                                active = events;
                            }
                            break;
                        case R.id.settings_room:
                            if (active != settings) {
                                fm.hide(active).show(settings);
                                active = settings;
                            }
                            break;
                    }
                    fm.commit();
                    return true;

 public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                    fm = getSupportFragmentManager().beginTransaction();
                    fm.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                    switch (item.getItemId()) {
                        case R.id.main_room:
                            if (active != earn) {
                                fm.hide(active).show(earn);
                                active = earn;
                            }
                            break;
                        case R.id.refs_room:
                            if (active != refs) {
                                fm.hide(active).show(refs);
                                active = refs;
                            }
                            break;
                        case R.id.events_room:
                            if (active != events) {
                               fm.hide(active).show(events);
                                active = events;
                            }
                            break;
                        case R.id.settings_room:
                            if (active != settings) {
                                fm.hide(active).show(settings);
                                active = settings;
                            }
                            break;
                    }
                    fm.commit();
                    return true;