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get_json_schema drops items / enum when a Union contains list[...], dict[...] or Literal[...]

Status: Open.

#49122 In huggingface/transformers;

· JoeyTan21 opened on Sep 26, 2026

Trainer fails to resume from a checkpoint on CPU with two or more processes

bug

Status: Open.

#49121 In huggingface/transformers;

· SeverinVisionary opened on Sep 25, 2026

[serge] integration failure triage - 2026-09-25

Status: Open.

#49119 In huggingface/transformers;

· github-actions opened on Sep 25, 2026

Nemotron3Diarization streaming: the last chunk drops the final valid frame when len(audio) % 160 < 96

bug

Status: Open.

#49113 In huggingface/transformers;

· happyarts opened on Sep 25, 2026

Return hidden states in VLMs

Feature requestRequest for a new featureRequest for a new feature

Status: Open.

#49108 In huggingface/transformers;

· zucchini-nlp opened on Sep 25, 2026

ModernBERT: local-attention window is computed from sequence index, not position_ids, so non-monotonic positions get a silently different window

Status: Open.

#49106 In huggingface/transformers;

· johnmofficial16-prog opened on Sep 25, 2026

MusicGen: forward(labels=...) raises "set the decoder_start_token_id" on every released checkpoint, while generate() and prepare_decoder_input_ids_from_labels() find the token fine

bug

Status: Open.

#49095 In huggingface/transformers;

· KhalidIbrahem opened on Sep 24, 2026

MusicGen: hub configs set decoder dropout=0.1 but the checkpoints were trained with 0 — train() doubles the loss and silently breaks fine-tuning

bug

Status: Open.

#49094 In huggingface/transformers;

· KhalidIbrahem opened on Sep 24, 2026

SequenceBiasLogitsProcessor: two edge cases (token id 0 rejected in list format; prefix equal to full context skipped)

bug

Status: Open.

#49093 In huggingface/transformers;

· lucaluo925 opened on Sep 24, 2026

Qwen2Tokenizer overwrites pre_tokenizer from tokenizer.json. Wrong token IDs for all Qwen3.6 / Qwen3.8 models (v4→v5 regression)

bug

Status: Open.

#49066 In huggingface/transformers;

· simonepstein opened on Sep 23, 2026

Cache.crop does not roll back linear-attention recurrent states — block/speculative verification on GDN hybrids (Qwen3-Next / Qwen3.5) is not lossless with DynamicCache

Status: Open.

#49036 In huggingface/transformers;

· 0xWhiteMage opened on Sep 23, 2026

HfArgumentParser crashes on a dataclass field typed as a bare list

Status: Open.

#49028 In huggingface/transformers;

· caiotheodoro opened on Sep 23, 2026