diff --git a/resources/data/hints.ini b/resources/data/hints.ini
index 27e6da9e24..ff3c8e158a 100644
--- a/resources/data/hints.ini
+++ b/resources/data/hints.ini
@@ -64,26 +64,26 @@
 
 [hint:Precise wall]
 text = Precise wall\nDid you know that turning on precise wall can improve precision and layer consistency?
-documentation_link = https://github.com/OrcaSlicer/OrcaSlicer/wiki/quality_settings_precision
+documentation_link = https://www.orcaslicer.com/wiki/quality_settings_precision#precise-wall
 
 [hint:Sandwich mode]
 text = Sandwich mode\nDid you know that you can use sandwich mode (inner-outer-inner) to improve precision and layer consistency if your model doesn't have very steep overhangs?
 
 [hint:Chamber temperature]
 text = Chamber temperature\nDid you know that OrcaSlicer supports chamber temperature?
-documentation_link = https://github.com/OrcaSlicer/OrcaSlicer/wiki/Chamber-temperature
+documentation_link = https://www.orcaslicer.com/wiki/material_temperatures#print-chamber-temperature
 
 [hint:Calibration]
 text = Calibration\nDid you know that calibrating your printer can do wonders? Check out our beloved calibration solution in OrcaSlicer.
-documentation_link = https://github.com/OrcaSlicer/OrcaSlicer/wiki/Calibration
+documentation_link = https://www.orcaslicer.com/wiki/calibration
 
 [hint:Auxiliary fan]
 text = Auxiliary fan\nDid you know that OrcaSlicer supports Auxiliary part cooling fan?
-documentation_link = https://github.com/OrcaSlicer/OrcaSlicer/wiki/Auxiliary-fan
+documentation_link = https://www.orcaslicer.com/wiki/material_cooling#auxiliary-part-cooling-fan
 
 [hint:Air filtration]
 text = Air filtration/Exhaust Fan\nDid you know that OrcaSlicer can support Air filtration/Exhaust Fan?
-documentation_link = https://github.com/OrcaSlicer/OrcaSlicer/wiki/air-filtration
+documentation_link = https://www.orcaslicer.com/wiki/material_cooling#activate-air-filtration
 
 [hint:G-code window]
 text = G-code window\nYou can turn on/off the G-code window by pressing the <b>C</b> key.
diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index 56bff00055..b7ab12ee0d 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -1194,7 +1194,7 @@ StringObjectException Print::validate(StringObjectException *warning, Polygons*
         }
     }
 
-    if (m_config.print_sequence == PrintSequence::ByObject && m_objects.size() > 1) {
+    if (m_config.print_sequence == PrintSequence::ByObject && (m_objects.size() > 1 || m_objects[0]->instances().size() > 1)) {
         if (m_config.timelapse_type == TimelapseType::tlSmooth)
             return {L("Smooth mode of timelapse is not supported when \"by object\" sequence is enabled.")};
 
diff --git a/src/libslic3r/Slicing.cpp b/src/libslic3r/Slicing.cpp
index f3499b7d36..aa24b1074d 100644
--- a/src/libslic3r/Slicing.cpp
+++ b/src/libslic3r/Slicing.cpp
@@ -260,7 +260,7 @@ std::vector<double> layer_height_profile_adaptive(const SlicingParameters& slici
     // last facet visited by the as.next_layer_height() function, where the facets are sorted by their increasing Z span.
     size_t current_facet = 0;
     // loop until we have at least one layer and the max slice_z reaches the object height
-    while (print_z + EPSILON < slicing_params.object_print_z_height()) {
+    while (print_z + EPSILON < slicing_params.object_print_z_uncompensated_height()) {
         float height = slicing_params.max_layer_height;
         // Slic3r::debugf "\n Slice layer: %d\n", $id;
         // determine next layer height
@@ -331,10 +331,10 @@ std::vector<double> layer_height_profile_adaptive(const SlicingParameters& slici
         print_z += height;
     }
 
-    double z_gap = slicing_params.object_print_z_height() - *(layer_height_profile.end() - 2);
+    double z_gap = slicing_params.object_print_z_uncompensated_height() - *(layer_height_profile.end() - 2);
     if (z_gap > 0.0)
     {
-        layer_height_profile.push_back(slicing_params.object_print_z_height());
+        layer_height_profile.push_back(slicing_params.object_print_z_uncompensated_height());
         layer_height_profile.push_back(std::clamp(z_gap, slicing_params.min_layer_height, slicing_params.max_layer_height));
     }