diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 5969de5b5da..2b56b30be90 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -637,6 +637,14 @@ static bool transform_modal_item_poll(const wmOperator *op, int value)
       }
       break;
     }
+    case TFM_MODAL_TRANSLATE:
+    case TFM_MODAL_ROTATE:
+    case TFM_MODAL_RESIZE: {
+      if (!transform_mode_is_changeable(t->mode)) {
+        return false;
+      }
+      break;
+    }
   }
   return true;
 }
@@ -876,11 +884,6 @@ int transformEvent(TransInfo *t, const wmEvent *event)
             handled = true;
           }
         }
-        else if (t->mode == TFM_SEQ_SLIDE) {
-          t->flag ^= T_ALT_TRANSFORM;
-          t->redraw |= TREDRAW_HARD;
-          handled = true;
-        }
         else if (transform_mode_is_changeable(t->mode)) {
           restoreTransObjects(t);
           resetTransModal(t);
@@ -922,11 +925,6 @@ int transformEvent(TransInfo *t, const wmEvent *event)
             handled = true;
           }
         }
-        else if (t->mode == TFM_SHRINKFATTEN) {
-          t->flag ^= T_ALT_TRANSFORM;
-          t->redraw |= TREDRAW_HARD;
-          handled = true;
-        }
         else if (transform_mode_is_changeable(t->mode)) {
           /* Scale isn't normally very useful after extrude along normals, see T39756 */
           if ((t->con.mode & CON_APPLY) && (t->orient[t->orient_curr].type == V3D_ORIENT_NORMAL)) {
diff --git a/source/blender/editors/transform/transform_mode_edge_seq_slide.c b/source/blender/editors/transform/transform_mode_edge_seq_slide.c
index dfa5c164acf..1682b5bfe31 100644
--- a/source/blender/editors/transform/transform_mode_edge_seq_slide.c
+++ b/source/blender/editors/transform/transform_mode_edge_seq_slide.c
@@ -32,6 +32,7 @@
 #include "ED_screen.h"
 
 #include "WM_api.h"
+#include "WM_types.h"
 
 #include "UI_interface.h"
 
@@ -45,6 +46,18 @@
 /** \name Transform (Sequencer Slide)
  * \{ */
 
+static eRedrawFlag seq_slide_handleEvent(struct TransInfo *t, const wmEvent *event)
+{
+  BLI_assert(t->mode == TFM_SEQ_SLIDE);
+  wmKeyMapItem *kmi = t->custom.mode.data;
+  if (event->type == kmi->type && event->val == kmi->val) {
+    /* Allows the 'Expand to fit' effect to be enabled as a toogle. */
+    t->flag ^= T_ALT_TRANSFORM;
+    return TREDRAW_HARD;
+  }
+  return TREDRAW_NOTHING;
+}
+
 static void headerSeqSlide(TransInfo *t, const float val[2], char str[UI_MAX_DRAW_STR])
 {
   char tvec[NUM_STR_REP_LEN * 3];
@@ -61,7 +74,7 @@ static void headerSeqSlide(TransInfo *t, const float val[2], char str[UI_MAX_DRA
       str + ofs, UI_MAX_DRAW_STR - ofs, TIP_("Sequence Slide: %s%s, ("), &tvec[0], t->con.text);
 
   if (t->keymap) {
-    wmKeyMapItem *kmi = WM_modalkeymap_find_propvalue(t->keymap, TFM_MODAL_TRANSLATE);
+    wmKeyMapItem *kmi = t->custom.mode.data;
     if (kmi) {
       ofs += WM_keymap_item_to_string(kmi, false, str + ofs, UI_MAX_DRAW_STR - ofs);
     }
@@ -91,7 +104,7 @@ static void applySeqSlideValue(TransInfo *t, const float val[2])
 static void applySeqSlide(TransInfo *t, const int mval[2])
 {
   char str[UI_MAX_DRAW_STR];
-  float values_final[2] = {0.0f};
+  float values_final[3] = {0.0f};
 
   snapSequenceBounds(t, mval);
   if (applyNumInput(&t->num, values_final)) {
@@ -126,6 +139,7 @@ static void applySeqSlide(TransInfo *t, const int mval[2])
 void initSeqSlide(TransInfo *t)
 {
   t->transform = applySeqSlide;
+  t->handleEvent = seq_slide_handleEvent;
 
   initMouseInputMode(t, &t->mouse, INPUT_VECTOR);
 
@@ -142,5 +156,8 @@ void initSeqSlide(TransInfo *t)
    * (supporting frames in addition to "natural" time...). */
   t->num.unit_type[0] = B_UNIT_NONE;
   t->num.unit_type[1] = B_UNIT_NONE;
+
+  /* Workaround to use the same key as the modal keymap. */
+  t->custom.mode.data = WM_modalkeymap_find_propvalue(t->keymap, TFM_MODAL_TRANSLATE);
 }
 /** \} */
diff --git a/source/blender/editors/transform/transform_mode_shrink_fatten.c b/source/blender/editors/transform/transform_mode_shrink_fatten.c
index cdea388529f..6058a2824e9 100644
--- a/source/blender/editors/transform/transform_mode_shrink_fatten.c
+++ b/source/blender/editors/transform/transform_mode_shrink_fatten.c
@@ -32,6 +32,7 @@
 #include "ED_screen.h"
 
 #include "WM_api.h"
+#include "WM_types.h"
 
 #include "UI_interface.h"
 
@@ -45,6 +46,18 @@
 /** \name Transform (Shrink-Fatten)
  * \{ */
 
+static eRedrawFlag shrinkfatten_handleEvent(struct TransInfo *t, const wmEvent *event)
+{
+  BLI_assert(t->mode == TFM_SHRINKFATTEN);
+  wmKeyMapItem *kmi = t->custom.mode.data;
+  if (event->type == kmi->type && event->val == kmi->val) {
+    /* Allows the 'Even Thickness' effect to be enabled as a toogle. */
+    t->flag ^= T_ALT_TRANSFORM;
+    return TREDRAW_HARD;
+  }
+  return TREDRAW_NOTHING;
+}
+
 static void applyShrinkFatten(TransInfo *t, const int UNUSED(mval[2]))
 {
   float distance;
@@ -78,7 +91,7 @@ static void applyShrinkFatten(TransInfo *t, const int UNUSED(mval[2]))
   ofs += BLI_strncpy_rlen(str + ofs, ", (", sizeof(str) - ofs);
 
   if (t->keymap) {
-    wmKeyMapItem *kmi = WM_modalkeymap_find_propvalue(t->keymap, TFM_MODAL_RESIZE);
+    wmKeyMapItem *kmi = t->custom.mode.data;
     if (kmi) {
       ofs += WM_keymap_item_to_string(kmi, false, str + ofs, sizeof(str) - ofs);
     }
@@ -121,6 +134,7 @@ void initShrinkFatten(TransInfo *t)
   else {
     t->mode = TFM_SHRINKFATTEN;
     t->transform = applyShrinkFatten;
+    t->handleEvent = shrinkfatten_handleEvent;
 
     initMouseInputMode(t, &t->mouse, INPUT_VERTICAL_ABSOLUTE);
 
@@ -134,6 +148,9 @@ void initShrinkFatten(TransInfo *t)
     t->num.unit_type[0] = B_UNIT_LENGTH;
 
     t->flag |= T_NO_CONSTRAINT;
+
+    /* Workaround to use the same key as the modal keymap. */
+    t->custom.mode.data = WM_modalkeymap_find_propvalue(t->keymap, TFM_MODAL_RESIZE);
   }
 }
 /** \} */