Issues

• SmolVLA fine-tuning on ~100 episodes: policy output collapses toward near-constant actions (gripper span 1.4° vs 32° in demo data)

  bugconfigurationdatasetdependenciesevaluationexamplespoliciesprocessorsensors
  huggingface/lerobot#5082 · Filter by author bkbk-robot opened on Oct 24, 2026
  5

• Add QF3 filtered-gradient updates for a state-only flow actor

  bugenhancementevaluationexamplesperformancepoliciessensorssimulationtrainingvisualization
  huggingface/lerobot#5080 · Filter by author Hadrien-Cornier opened on Oct 24, 2026

• concatenate_video_files fails for input paths containing apostrophes (tested fix included)

  bugdatasetsensorstests
  huggingface/lerobot#5075 · Filter by author JonnyFaeth opened on Oct 23, 2026

• Koch leader calibration fails with "Negative values are not allowed": homing offset has the wrong sign on motors in reverse drive mode

  bugpoliciesrobotsteleoperatorstests
  huggingface/lerobot#5060 · Filter by author diegoakel opened on Oct 22, 2026
  4

• [Dataset] lerobot/berkeley_autolab_ur5 v3.0: last episode of 28 video files is missing, so episode metadata points past the end of the video

  bugdatasetexamplesperformancesensorstests
  huggingface/lerobot#5039 · Filter by author lucky07-07 opened on Oct 21, 2026
  1

• fix(datasets): bound pending AsyncImageWriter frames

  bugdatasetperformancepoliciessensorstests
  huggingface/lerobot#5029 · Filter by author TinyGeek opened on Oct 21, 2026

• Kinematics steps read joints in observation dict order instead of motor_names order

  bugrobotsteleoperators
  huggingface/lerobot#5011 · Filter by author ravediamond opened on Oct 19, 2026

• Support a Raspberry Pi SO-101 controller without PyTorch imports

  dependenciesenhancementperformancepoliciesquestionrobotssensorsteleoperators
  huggingface/lerobot#5002 · Filter by author Hadrien-Cornier opened on Oct 17, 2026
  1

• modify_tasks returns incorrect task labels after editing a loaded dataset

  bugdatasetdependenciesexamplespoliciesquestiontests
  huggingface/lerobot#4998 · Filter by author i-luoying opened on Oct 17, 2026

• [Model integration] Add Long-WAM support to LeRobot

  configurationdocumentationenhancementevaluationexamplespoliciesprocessorteststraining
  huggingface/lerobot#4983 · Filter by author Aaronhuang-778 opened on Oct 15, 2026
  3

  

• split_dataset accepts duplicate episode indices within one split and writes invalid episode IDs

  bugdatasetdependenciespoliciesteststraining
  huggingface/lerobot#4982 · Filter by author i-luoying opened on Oct 15, 2026

• [Dataset v3] Invalid episode offsets and bounds silently return wrong frames and cross-episode actions

  bugdatasetdependenciesexamplesperformancepoliciesteststraining
  huggingface/lerobot#4976 · Filter by author adi0x90 opened on Oct 15, 2026
  2

• FP16 constant state/action normalization produces NaN with default epsilon

  bugdependenciespoliciesprocessorteststraining
  huggingface/lerobot#4973 · Filter by author David1726 opened on Oct 14, 2026

• Motors: check register names statically

  bugdocumentation
  huggingface/lerobot#4962 · Filter by author nicolas-rabault opened on Oct 14, 2026
  4

• Motors: pipeline the sync read of a control loop

  performancepoliciesprocessor
  huggingface/lerobot#4961 · Filter by author nicolas-rabault opened on Oct 14, 2026

• Motors: read Dynamixel motors with Fast Sync Read

  documentationperformancepolicies
  huggingface/lerobot#4960 · Filter by author nicolas-rabault opened on Oct 14, 2026

• push_to_hub defaults every dataset to apache-2.0, including conversions of CC BY datasets

  datasetenhancementexamplessimulation
  huggingface/lerobot#4944 · Filter by author s1g6r opened on Oct 12, 2026
  3

• lerobot-eval fails for pusht with the default async envs: workers can't find gym_pusht, and attribute probes shut them down

  bugconfigurationevaluationpoliciestests
  huggingface/lerobot#4931 · Filter by author LinCanNerd opened on Oct 12, 2026

• validate_frame rejects features whose shape is declared as a list

  bugdatasetdependenciestests
  huggingface/lerobot#4928 · Filter by author vicfei opened on Oct 12, 2026

• Video dataset indexing hangs indefinitely when torchcodec native lib fails to load (no system ffmpeg) - the OSError is printed but never raised

  bugdatasetdependencies
  huggingface/lerobot#4922 · Filter by author vicfei opened on Oct 11, 2026
  1

• ACT: validate_features rejects the state-only input that forward() actually consumes; adding an unused environment_state is the only workaround

  configurationdatasetpoliciessensorsteststraining
  huggingface/lerobot#4921 · Filter by author vicfei opened on Oct 11, 2026

• TDMPC can't be served by the async PolicyServer: predict_action_chunk reads empty queues, and its chunk is time-major

  bugCIdependenciespolicies
  huggingface/lerobot#4870 · Filter by author easyrider11 opened on Oct 7, 2026

• [HIL-SERL] Proposal: add SpaceMouse support for human interventions

  documentationenhancementpoliciesprocessorrobotssimulationteleoperatorstests
  huggingface/lerobot#4859 · Filter by author Jas000n opened on Oct 6, 2026
  

• reBot B601-DM: issues hit in teleop/recording and fixes (want PRs?)

  bugconfigurationdatasetperformancepoliciesrobotssensorsteleoperators
  huggingface/lerobot#4858 · Filter by author ErykHalicki opened on Oct 6, 2026
  2

  

• LIBERO doesn't work on native Windows: 4 small blockers, with a tested fix (happy to send a PR)

  dependenciesenhancementevaluationperformancesensorssimulationtestsvisualization
  huggingface/lerobot#4857 · Filter by author ahmedsleem109 opened on Oct 6, 2026