Any updates? I face the same issue.. :(

Could you find a solution? I have the same issue

Hi Bruno,

In order to fix this issue, GOTO SU01 transaction - Enter the User - Switch to edit mode - Click on Personalization tab - navigate to /UI2/USER_PROFILE - Select it - Click on the Trash icon. It will not delete but resets the user profile. Now the custom theme which has been set will load automatically.

Hope this helps.

Regards,

JC

Though it is old blog, might be helpful for others who are still looking into this issue. Please check below note

2465991 - Resetting /UI2/USER_PROFILE has only partial effect on Fiori Launchpad personalization

If you still want to reset the user profile for mass users, then you need to write custom code as shown below:

Fill the selection screen parameters with user ids and theme name and execute it.

*&---------------------------------------------------------------------*
*& Report ZFIORI_THEME
*&---------------------------------------------------------------------*
REPORT ZFIORI_THEME.
TABLES: suid_st_bname.
DATA: lt_spers_obj TYPE TABLE OF spers_obj WITH HEADER LINE.
DATA: lv_spers_fld TYPE spers_fld.
DATA: BEGIN OF tp_s_user_profile_base,
        uname           TYPE syuname,
        id              TYPE string,
        shell_type      TYPE string,
        value           TYPE string,
        data_type       TYPE string,
        edit_state      TYPE i,
        validation_mask TYPE string,
      END OF tp_s_user_profile_base .
DATA: s_obj  TYPE RANGE OF spers_obj-object_id,
      sr_obj LIKE LINE OF s_obj.
DATA: lv_uname TYPE sy-uname.
DATA: pers_data      LIKE TABLE OF tp_s_user_profile_base,
      pers_data_list TYPE spers_adt.
SELECT-OPTIONS: s_user FOR suid_st_bname-bname.
PARAMETERS p_theme TYPE /ui2/nwbc_cfg_param_value.
START-OF-SELECTION.
  LOOP AT s_user REFERENCE INTO DATA(lsr_user).
    CLEAR: sr_obj.
    sr_obj-sign = lsr_user->sign.
    sr_obj-option = lsr_user->option.
    sr_obj-low = lsr_user->low.
    sr_obj-high = lsr_user->high.
    APPEND sr_obj TO s_obj.
  ENDLOOP.
  SELECT * FROM spers_obj INTO TABLE lt_spers_obj
    WHERE pers_type EQ 'U'
      AND object_id IN s_obj
      AND pers_key EQ '/UI2/USER_PROFILE'
      AND fieldname EQ 'VALUE'.
END-OF-SELECTION.
  lv_spers_fld = p_theme.
  LOOP AT lt_spers_obj.
    CLEAR: pers_data, pers_data[], lv_uname.
    lv_uname = lt_spers_obj-object_id.
    CALL METHOD cl_pers_admin=>get_data
      EXPORTING
        p_pers_key       = '/UI2/USER_PROFILE'
        p_uname          = lv_uname
        p_user_data_only = ' '
      IMPORTING
        p_pers_data      = pers_data
        p_pers_data_list = pers_data_list.
    LOOP AT pers_data ASSIGNING FIELD-SYMBOL(<fs_pers>).
      <fs_pers>-value = lv_spers_fld.
    ENDLOOP.
    CALL METHOD cl_pers_admin=>set_data
      EXPORTING
        p_pers_key          = '/UI2/USER_PROFILE'
        p_uname             = lv_uname
        p_pers_data         = pers_data
      EXCEPTIONS
        pers_key_not_found  = 1
        data_type_error     = 2
        user_does_not_exist = 3
        not_set_to_default  = 4
        pers_key_locked     = 5
        OTHERS              = 6.
    IF sy-subrc EQ 0.
      WRITE:/ lv_uname, (50) 'Updated'.
    ELSE.
      WRITE:/ lv_uname, (50) 'NON-Error'.
    ENDIF.
  ENDLOOP.