Nine independent observational anomalies reported between 2022 and 2026 — by JWST, DESI, Chandra, and H0DN — share a common feature: they all occur in the redshift window 0 ≤ z H_ΛCDM (z) for z 3σ) ; (2) overmassive galaxies at z > 3 (JWST) ; (3) spiral and disk galaxies at z > 3 (Alaknanda, Big Wheel, GN20 stellar bar) ; (4) quiescent galaxies formed at z > 6; (5) super-Eddington accretion at 2. 4× in RACS J0320-35 at z = 6. 13 (Chandra) ; (6) overmassive black holes at cosmic dawn (JWST) ; (7) overabundant Little Red Dots at z = 4–9 (JWST) ; (8) disappearance of Little Red Dots below z ~ 3; (9) Hubble tension H₀ₗocal = 73. 50 ± 0. 81 vs H₀CMB = 67. 4 ± 0. 5 km/s/Mpc (H0DN, April 2026). Two key new results are reported in this version. First, a transient apparent acceleration phase at z ∈ 5. 5, 6. 539 immediately after the quantum rebound (qCBT < 0 while q_ΛCDM ≈ +0. 49), followed by a reinforced braking phase at z ∈ 0. 6, 5. 5 where qCBT/q_ΛCDM ≈ 1. 48 at z ≈ 4. This two-phase structure is a direct, parameter-free consequence of D (z) and explains why JWST anomalies are concentrated precisely in the z ~ 5–7 window. The CBT correction factor 1/D (z) − 1 reaches its maximum of 25% at zₘax = 4. 988, corresponding to HCBT/H_ΛCDM = 1. 155. Second, the Hubble tension is resolved within CBT via a stellar physics bias on Cepheid variables. In the conformal metric Φ (z) g_μν, stars formed at redshift zform have effective gravitational mass mₑff = m₀ √Φ (zform), modifying their pulsation period (Pₑff = P₀ γ (zform) ) and luminosity (Lₑff = L₀ Φ²). The combined bias on H₀ is ΔH₀/H₀ = 2. 562 × log₁₀ γ (zform), giving ΔH₀ = +6. 1 km/s/Mpc for zform = 2. 24 — consistent with the cosmic star-formation rate peak and requiring no free parameter. The key observational test is a correlation between H₀ₐpparent and the stellar age of the Cepheid host galaxy, testable with existing SH0ES data. Four quantitative, parameter-free predictions are given for follow-up: (1) 21-cm spectral minimum at z = 6. 539 (SKA/HERA) ; (2) 7% Eddington correction for RACS J0320-35 (Chandra/ATHENA) ; (3) sharp LRD number density asymmetry around zc (JWST deep fields) ; (4) H (z) excess of 15. 5% at z ≈ 5 (DESI-2, Euclid spectroscopic Phase 2).
François-Xavier Cerniac (Sun,) studied this question.